Another 330ci ZHP TS2+

[Richaraiza]

Hi guys, just wanted to introduce myself to the FI world. I've had my car since it was born and love every little thing about it. So I spent the money to let her know that I adore her :luv:

I've just recently had an ESS TS2+ installed into my car along with other necessary additions to make my baby purr. I started out slow with wheels and muffler. Wasn't enough to show my feelings. So I treated her with some TC Klines which work exceptionally well. Now, since I had the money available I threw in quite a large amout of money to put in an ESS TS2+, Schrick cams, SS Headers, upgrades flywheel and clutch, and a custom exhaust. The exhaust goes from the headers to one big 3" pipe all the way back to a Magnaflow muffler. Think I might need a resonator, but for right now there are no restrictionns as far as air flow from the exhaust. I did get a 200 cell cat put in. Seems like its just for looks because I'm pretty sure I won't pass emissions.

Just want to give a big thanks to SCR Performance that installed my system located in Loveland, CO. They did an awesome just of putting everything together. I'd also want to put a shout out to ESS for having an amazing supercharger system. It feels like a whole new car and put a huge smile on my face everytime I even think of driving. Awesome product guys.:thumbsup:


Here's a night video that we made yesterday in Longmont, CO. Just one pull. The guys at SCR were saying that I'm probably running about 5 psi due to altitude. I didn't want to get the pulley that will bring me to 8.5 psi since I'll be moving to Georgia next fall. :(

http://www.youtube.com/watch?v=S13dKsEFM6U


I'll only post pics if people really want to see them. Just let me know. Thanks for reading. (if you did :blah: )

[DubVersion]

Welcome !

Car sounds great !

Of course we want pics, and above all, where's the dyno ?

greetings,

dub

[bigjae1976]

Congrats...sounds like you are in the Army.

[Richaraiza]

Welcome !

Car sounds great !

Of course we want pics, and above all, where's the dyno ?

greetings,

dub

Dyno is coming shortly. I have a before and after, but can't find my before as of right now. Like I said though, my car is running really low psi right now so probably won't get good figures. Its about 6800 elevation here, but would be interesting to see how much it makes.


Congrats...sounds like you are in the Army.

Yes, I am currently on my vacations for 2 weeks from Afghanistan. Good eye. :)

[ZeroSum]

Nice, sounds evil :4ngie:

[Richaraiza]

The exhaust is so deafening. I almost had to let off the gas it was so unbearable. Sounds like a friggin race car.

http://www.youtube.com/watch?v=dRrO0SOlzVc

[Anthony@F1 Autohaüs]

Sounds Good Rich...I envy u now....:P

-Anthony@F1 Autohaus

[DILLA]

sounds mean! Nice ride lets see some more pics!

[Dannyncc]

the poor M3 is mine

[kevinterkelsen]

Congratualtions! Twin Screws are a great solutions for non M cars! a question - why not go to 8,5 psi boost - not sure i understand that?

[Safar]

Welcome brother!

I doubt you're only at 5psi though, you wouldn't pull on an M3 like that with only 5psi... right?

[Mirko]

Wicked!! Post some pictures. I already know what it looks like but come on, pimp out that car! lol

The altitude affects the M3 as well, hence he could be running only 5psi.

[Minnoe07]

Great to see another ESS TS 330!!

I also don't understand why you are staying with the TS2 pulley instead of going to the TS2+ pulley. You have the correct flash on your DME?

To me it just seems like you are missing out on HP that you paid for.

[Richaraiza]

Ok guys here's the results. The first is the uncorrected and the second is corrected. I pulled on Danny with the uncorrected.
http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8017
http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8018
To answer the questions, I have the 8.5 pulley in. That's the reason that my boost is getting jacked by the altitude. I could have gotten a smaller pulley to get back to the psi needed. I do have the right flash, though it looks like I'm running super rich. Not good.


the poor M3 is mine

:shhh:

Welcome brother!

I doubt you're only at 5psi though, you wouldn't pull on an M3 like that with only 5psi... right?

Sounds like you are right. They didn't have a boost guage at the place I did the Dyno so I can't go off fact. I was just telling what I heard. I think, from the figures I would venture to guess around 6, maybe 6.5? :dunno: Please correct me if I'm wrong as I'd like to know.

Sounds Good Rich...I envy u now....:P

-Anthony@F1 Autohaus

:4ngie: :hi:




Here's the link to all my picks. I'll post them soon. Just not now.
http://forum.e46fanatics.com/album.php?albumid=1280



And more vids.
http://www.youtube.com/watch?v=gAXescLIbDQ
http://www.youtube.com/watch?v=omLHArKScz4

[Minnoe07]

Wow.... it's amazing how much altitude affects horsepower. I knew it always did, but that is A LOT.

As far as the tune, better rich than lean.

[pat]

dayum rich... ima killa you!

[Dj_Frost]

Not bad, not bad at all :)

[broach328]

the reason he isnt going to 8.5psi now is because the air is less dense making less boost. if he were to get 8.5psi where he is now, when he moves to GA, the air is more dense and could overboost causing problems. thats my guess

[docwyte]

Remember the M3 is down at least 18% due to altitude. My car uncorrected was 400rwhp, corrected was 487rwhp on the same dyno.

I see 2-2.5 psi less due to altitude...

[bigjae1976]

Yes, I am currently on my vacations for 2 weeks from Afghanistan. Good eye. :)

What other reason is there to move from Colorado to Georgia?:)

Stay safe over there!

[broach328]

i hate to ask about costs but my brother is considering either buying like an 02 m3 or an 02-03 330 and supercharging it. about how much has this setup run you? thanks, garrett

[BimmerDude18]

Where was the wideband for the dyno placed. If its a tailpipe sniffer those AFR's aren't really accurate because of the 200 cell cat.

[BadBoostedBmwM3]

Wow... nice upgrade there sir. But, you are running real rich! Maybe you should invest in a retune if the car uses a MAF. Does ESS use a maf?? If so, I would that it (maf) would see the less boost (air) and pull some fuel

[TxZHP04]

The AFR looks rich but that could simply be a sensor error (although I'm more accustomed to seeing errors on the lean side). I'm more interested in what's going on around 6300 rpm.

Regarding altitude, keep in mind that NA cars will feel more of the effect than cars with FI.

[bigjae1976]

i hate to ask about costs but my brother is considering either buying like an 02 m3 or an 02-03 330 and supercharging it. about how much has this setup run you? thanks, garrett

Probably close to $10k at retail for the s/c kit, headers, and cams. I would say anywhere from $1500-$2000 for the install.

[Richaraiza]

Can't keep up with the questions right now. Ha.


the reason he isnt going to 8.5psi now is because the air is less dense making less boost. if he were to get 8.5psi where he is now, when he moves to GA, the air is more dense and could overboost causing problems. thats my guess

This is correct.

dayum rich... ima killa you!

:str8pimpin:

Not bad, not bad at all :)

:hi:

What other reason is there to move from Colorado to Georgia?:)

Stay safe over there!

Thanks man. I will.

i hate to ask about costs but my brother is considering either buying like an 02 m3 or an 02-03 330 and supercharging it. about how much has this setup run you? thanks, garrett

I'll post the cost sheet when I get home.

Where was the wideband for the dyno placed. If its a tailpipe sniffer those AFR's aren't really accurate because of the 200 cell cat.

Tailpipe sniffer

The AFR looks rich but that could simply be a sensor error (although I'm more accustomed to seeing errors on the lean side). I'm more interested in what's going on around 6300 rpm.

Regarding altitude, keep in mind that NA cars will feel more of the effect than cars with FI.

I saw that too. Was wondering the same thing. I was in the car myself on the pedal during the dyno and I had that thing pegged till redline. So :dunno:

[E46mike-izzle]

:thumbsup: Congrats

[broach328]

Alright awesome. And thanks for the service. my brother is enlisted Air Force. :thumbsup:

[Richaraiza]

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8021
http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8022

[Dannyncc]

:omg:

[Minnoe07]

Wow!!!!!!! You sir spent a lot of money. I wish I has that much money laying around like that.

[broach328]

same. my e30 would be pimpin :pimpin:

[sillieidiot]

damn that's like buying another car

[mcr_driver]

seriously baller status :wow:

[TxZHP04]

damn that's like buying another car

And it feels like a different car....

[Richaraiza]

seriously baller status :wow:

Not anymore :rofl:

[bigjae1976]

damn that's like buying another car

But its worth ever penny.:str8pimpi

[Safar]

Holy invoice, batman!

[Richaraiza]

Pics as requested. :)

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7095

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7817

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7819

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7820

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7821

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7822

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7499

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7823

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7824

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7825

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7826

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7827

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=7831

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8014

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8013

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8016

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8015

[TxZHP04]

Have you spoken with ESS about the irregularities in your dyno?

[Richaraiza]

Yes, pretty much said everything is normal. Quoted:

ME: I have a question about these. Not too worried about the numbers. I'm at 6400 Elevation and didn't get your smaller pulley. What I'm worried about is what's happening at 6300 rpm and my AFR. Is that normal? Or is there something wrong?

Asjborn: It is perfectly safe, but what you see is the programmed minimal injection duty cycle which we have to incorporate due to so many errors with MAF meters and O2 sensors. This basically means that at sea level, even if a MAF or O2 goes bad the DME does not have the ability to remove more fuel than what it takes to keep the engine from destroying itself (13-13.5:1). At very high elevation this limit will mean the ECU will run a bit richer than programmed 11-12:1 targets. There are 2 ways of adjusting this, 1 is to retune the ECU slightly the other is to add a bit more boost. It is also perfectly safe to drive it as is but you will make a bit more power if I raise the AF ratio a little over 4500RPM. At normal eleveation it will be in the 11-12:1 range again as is.


I don't think I could have explained that in my own words. :rofl:

[rkneeshaw]

I love how stock that engine bay looks.... so jealous!

[TxZHP04]

Yes, pretty much said everything is normal. Quoted:

ME: I have a question about these. Not too worried about the numbers. I'm at 6400 Elevation and didn't get your smaller pulley. What I'm worried about is what's happening at 6300 rpm and my AFR. Is that normal? Or is there something wrong?

Asjborn: It is perfectly safe, but what you see is the programmed minimal injection duty cycle which we have to incorporate due to so many errors with MAF meters and O2 sensors. This basically means that at sea level, even if a MAF or O2 goes bad the DME does not have the ability to remove more fuel than what it takes to keep the engine from destroying itself (13-13.5:1). At very high elevation this limit will mean the ECU will run a bit richer than programmed 11-12:1 targets. There are 2 ways of adjusting this, 1 is to retune the ECU slightly the other is to add a bit more boost. It is also perfectly safe to drive it as is but you will make a bit more power if I raise the AF ratio a little over 4500RPM. At normal eleveation it will be in the 11-12:1 range again as is.


I don't think I could have explained that in my own words. :rofl:

Good to hear, I was curious as much as anything. I've never seen anything quite like that on a dyno before so I wasn't sure what to make of it.

[e46craze]

and yet another ESS TS+ 330:drool:

congrats man! ESS was always my first choice:)

[docwyte]

Hmmm, so I wonder if that means I can slap on the T trim blower on my car and run a few more lbs of boost?

[Richaraiza]

Maybe, would be interesting to see. :4ngie:

[albertbmw]

Seriously sick ride. :drool:

Stay safe!

[jetskier88]

looks good. damn since you threw in so much $$$ at once, might as well thrown in a Water/Meth kit for another $800 lol

wait do you still have an open diff?? no lsd = fml

[Richaraiza]

No LSD unfortunately. Couldn't make up my mind on if I wanted to keep my ratio at 3.07 or go spend extra to go up to 3.46. :( Meth kit, huh? Sounds menacing. Not just yet. need to make up my mind first on the diff.

[jetskier88]

No LSD unfortunately. Couldn't make up my mind on if I wanted to keep my ratio at 3.07 or go spend extra to go up to 3.46. :( Meth kit, huh? Sounds menacing. Not just yet. need to make up my mind first on the diff.

i would definetely go with the oem m3 3.64 lsd swap and TMS subframe reinforcement is a must...

m3 subframe cage and diff is way more heavy duty than our non-m setups.
http://img.photobucket.com/albums/v732/mybmwm3/bmrfst4-2.jpg

[bigjae1976]

looks good. damn since you threw in so much $$$ at once, might as well thrown in a Water/Meth kit for another $800 lol

wait do you still have an open diff?? no lsd = fml

Do you mean the old AA kit? That's water/alcohol. The new meth injection kit is $950.

An LSD a great upgrade! But I would make sure that you get the ratio that you want/need. I've got a 3.15 and its perfect for me! Some will be happier with a 3.46.

[jreid]

great resultss!

[jetskier88]

Do you mean the old AA kit? That's water/alcohol. The new meth injection kit is $950.



nope.. i went with AEM kit.. its around $450. i went with the 1 gallon. 5 is just unnecessary

http://www.aempower.com/ViewCategory.aspx?CategoryID=120

[Richaraiza]

nope.. i went with AEM kit.. its around $450. i went with the 1 gallon. 5 is just unnecessary

http://www.aempower.com/ViewCategory.aspx?CategoryID=120

Do you happen to have any dyno sheets of before and after meth/alc injection? That would probably be more convincing for me to do it.

[jetskier88]

Do you happen to have any dyno sheets of before and after meth/alc injection? That would probably be more convincing for me to do it.

no dyno.. i really need to do that asap. my comparison is just by running other cars lol.. but if anything, it helps preserve the life of your engine .

[Safar]

TS2+ with a 3.64? Do you even use 1st gear? :)

[jetskier88]

TS2+ with a 3.64? Do you even use 1st gear? :)

ahhh yes and no.. if the tires are warm i can get it to hook because the tires are pretty wide... but i generally do pulls from second gear because going from 1st is just so much strain on the whole car...

the 3.64 m3 lsd was by far the best mod. 1 wheel spin is the biggest bull$hit

[TxZHP04]

TS2+ with a 3.64? Do you even use 1st gear? :)

This is why I opted for a taller 3.23 LSD.

[jetskier88]

This is why I opted for a taller 3.23 LSD.

yea i was kinda hesitant on the shorter gears but the non-m rear drivetrain is built so wimpy. you dont want to end up like this guy and a few others.. there subframe cages actually ripped (not floorboard) where the bushing connects to the diff
http://forum.e46fanatics.com/showthread.php?t=714584

[TxZHP04]

yea i was kinda hesitant on the shorter gears but the non-m rear drivetrain is built so wimpy. you dont want to end up like this guy and a few others.. there subframe cages actually ripped (not floorboard) where the bushing connects to the diff
http://forum.e46fanatics.com/showthread.php?t=714584

As with the subframe mount failure (already cracked and repaired btw), I'll deal with the carrier failure when/if it happens. Doesn't sound like too big of a deal as it seems that you can just weld it up and reinforce it. Besides, I prefer my diff - ratio and locking mechanism - over the M3 unit.

[JP:330ci]

That thing sounds so mean.

[ATLZHP6M]

Yes, pretty much said everything is normal. Quoted:

ME: I have a question about these. Not too worried about the numbers. I'm at 6400 Elevation and didn't get your smaller pulley. What I'm worried about is what's happening at 6300 rpm and my AFR. Is that normal? Or is there something wrong?

Asjborn: It is perfectly safe, but what you see is the programmed minimal injection duty cycle which we have to incorporate due to so many errors with MAF meters and O2 sensors. This basically means that at sea level, even if a MAF or O2 goes bad the DME does not have the ability to remove more fuel than what it takes to keep the engine from destroying itself (13-13.5:1). At very high elevation this limit will mean the ECU will run a bit richer than programmed 11-12:1 targets. There are 2 ways of adjusting this, 1 is to retune the ECU slightly the other is to add a bit more boost. It is also perfectly safe to drive it as is but you will make a bit more power if I raise the AF ratio a little over 4500RPM. At normal eleveation it will be in the 11-12:1 range again as is.


I don't think I could have explained that in my own words. :rofl:

Richaraiza, do me a favor please!

Get on your car and drive it to 80mph on third gear and accelerate enough to hit 7k rpm (you should be in the 90mph + speed range). Let me know if you feel anything weird with your boost at around 6200 to 6300 rpm. Try this 3 times and let me know if you get any weird results.

The reason why I'm asking you to do this is because I saw your dyno and I saw that power dip at around 6300/6400 rpm and I think I might have the same 'problem' you have. I just haven't dyno'd my TS2 yet.

When I do the above mentioned exercise my car jerks back and forth like crazy because of what I think is the boost completing cutting out on me. It feels like a complete loss of power and acceleration, almost like what would happened if you hit a rev limiter.

I just recently attended Oktoberfest at Road Atlanta and I ran all 5 days of driving school and my instructors kept telling to upshift because they thought I was hitting the rev limiter. I told them it wasn't my shifting but this weird problem I'm having with my TS2. It happens almost everytime at 6200 to 6300 rpm mostly third gear.
:banghead:

[Richaraiza]

I'll try that as soon as I can, but right now we have about a foot of snow. Once it clears I will give it a try.

[ATLZHP6M]

I'll try that as soon as I can, but right now we have about a foot of snow. Once it clears I will give it a try.

yeah, safety first!

thanks for doing this, it will really help me with my research as I haven't really heard of any other TS2 owners experiencing this problem. Then again, I'm not sure they are pushing their cars hard enough... :4ngie:

[NickG@TechniqueTuning]

Richaraiza, do me a favor please!

Get on your car and drive it to 80mph on third gear and accelerate enough to hit 7k rpm (you should be in the 90mph + speed range). Let me know if you feel anything weird with your boost at around 6200 to 6300 rpm. Try this 3 times and let me know if you get any weird results.

The reason why I'm asking you to do this is because I saw your dyno and I saw that power dip at around 6300/6400 rpm and I think I might have the same 'problem' you have. I just haven't dyno'd my TS2 yet.

When I do the above mentioned exercise my car jerks back and forth like crazy because of what I think is the boost completing cutting out on me. It feels like a complete loss of power and acceleration, almost like what would happened if you hit a rev limiter.

I just recently attended Oktoberfest at Road Atlanta and I ran all 5 days of driving school and my instructors kept telling to upshift because they thought I was hitting the rev limiter. I told them it wasn't my shifting but this weird problem I'm having with my TS2. It happens almost everytime at 6200 to 6300 rpm mostly third gear.
:banghead:

Check to see if you have any MAF fault codes stored/triggered.

[Minnoe07]

No, I definitely do not have this. I was at Road Atlanta for the BMWCCA Oktoberfest HPDE and car car pulled HARD all the way to redline. I was keeping up with M5's and M3's all day on the long stretch.

[TxZHP04]

When I do the above mentioned exercise my car jerks back and forth like crazy because of what I think is the boost completing cutting out on me. It feels like a complete loss of power and acceleration, almost like what would happened if you hit a rev limiter.

I just recently attended Oktoberfest at Road Atlanta and I ran all 5 days of driving school and my instructors kept telling to upshift because they thought I was hitting the rev limiter. I told them it wasn't my shifting but this weird problem I'm having with my TS2. It happens almost everytime at 6200 to 6300 rpm mostly third gear.
:banghead:

What are the fuel levels when this happens? Have you checked fuel pressure at WOT?

This sounds remotely like the fuel starvation problem I used to experience (fortunately I now seem to have it fixed) when the gas level was ~1/4 tank, sometimes more. I experienced it during straight line acceleration and accelerating out of hard right handers. If it's leaning out due to lack of fuel (for whatever reason), you should have stored misfire codes.

Whether it's fuel, MAF, or ??? related, the first thing you need to do is check for codes. That should get you pointed in the right direction in terms of a fix.

[Asbjorn@ESS]

Check codes, replace MAF and check that AF ratios are solid at under 12.5:1 all the way to redline. If it is leaning out with new MAF and no error codes you have a fuel delivery problem, most likely pump or filter. It should pull hard all the way to redline when all is good.

[ATLZHP6M]

Check to see if you have any MAF fault codes stored/triggered.

I have checked before and i don't have any codes at all.

[ATLZHP6M]

No, I definitely do not have this. I was at Road Atlanta for the BMWCCA Oktoberfest HPDE and car car pulled HARD all the way to redline. I was keeping up with M5's and M3's all day on the long stretch.

Yeah, I was passing the E39 M5 all day and the E46 M3s on the back straight but it wasn't as smooth as your car probably.

[ATLZHP6M]

What are the fuel levels when this happens? Have you checked fuel pressure at WOT?

This sounds remotely like the fuel starvation problem I used to experience (fortunately I now seem to have it fixed) when the gas level was ~1/4 tank, sometimes more. I experienced it during straight line acceleration and accelerating out of hard right handers. If it's leaning out due to lack of fuel (for whatever reason), you should have stored misfire codes.

Whether it's fuel, MAF, or ??? related, the first thing you need to do is check for codes. That should get you pointed in the right direction in terms of a fix.

Fuel level could be full, half tank or almost empty, it doesn't make any difference. I don't have any codes and I installed the E46 M3 plastic reserve add-on, new fuel pump and filter along with new o2 sensors. The only thing I haven't replaced is my MAF sensor, mainly because visually it looks clean and in good shape and is not throwing any codes but I will replace it following ESS recommendation.

[TxZHP04]

Have you also verified that the coolant pump is running, the lines are properly routed and thoroughly bled, and that the front heat exchanger gets hot after several WOT runs? If the intercooler isn't fully functional, intake temps will rise and the engine will start pulling timing to compensate. This should be easy enough to verify before investing in a new MAF, especially if you have no stored codes of any sort.

[jreid]

:drool:dammm

[Richaraiza]

Still snowing.... http://i243.photobucket.com/albums/ff202/Dawnfox63/gifs/th_image001.gif

[ATLZHP6M]

Have you also verified that the coolant pump is running, the lines are properly routed and thoroughly bled, and that the front heat exchanger gets hot after several WOT runs? If the intercooler isn't fully functional, intake temps will rise and the engine will start pulling timing to compensate. This should be easy enough to verify before investing in a new MAF, especially if you have no stored codes of any sort.

yes to all of the above. I actually re-routed and trimmed my coolant hoses to maximize their performance. Pump works fine.

[ATLZHP6M]

I inspected my MAF yesterday and noticed that the plastic screen was partially loose (broken). I may have done this while wrestling to get the airbox installed with the ESS hose. :banghead:

[Richaraiza]

:hmm: DUDE, where's my car!






Added a new aero kit to the car :rofl:
http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8148


Kinda looks like the aztec lol
http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8147

[docwyte]

Mine's sitting nice and cozy in my garage. :D

[Sherweeeny]

i dont think ive ever heard a sweeter noise. congrats on having such a sweet car

[Richaraiza]

Thanks for the comments guys. It is pretty wild to drive now. I can only imagine how the HPF guys feel when they get all that additional power. I'm pretty set with just this much power for now. And it does sound mean as sh!t.

[savdragos]

Nice ride man, i have a 330ci too. I wanna buy the same supercharge in the spring off 2010.

PS: nice new aero kit

[Richaraiza]

^ Cool man I hope you do get it. Its well worth the money. Its no HPF, but fun none the less.


Richaraiza, do me a favor please!

Get on your car and drive it to 80mph on third gear and accelerate enough to hit 7k rpm (you should be in the 90mph + speed range). Let me know if you feel anything weird with your boost at around 6200 to 6300 rpm. Try this 3 times and let me know if you get any weird results.

The reason why I'm asking you to do this is because I saw your dyno and I saw that power dip at around 6300/6400 rpm and I think I might have the same 'problem' you have. I just haven't dyno'd my TS2 yet.

When I do the above mentioned exercise my car jerks back and forth like crazy because of what I think is the boost completing cutting out on me. It feels like a complete loss of power and acceleration, almost like what would happened if you hit a rev limiter.

I just recently attended Oktoberfest at Road Atlanta and I ran all 5 days of driving school and my instructors kept telling to upshift because they thought I was hitting the rev limiter. I told them it wasn't my shifting but this weird problem I'm having with my TS2. It happens almost everytime at 6200 to 6300 rpm mostly third gear.
:banghead:

My car is running fine, man. Pull all the way through RPM's in 3rd. Though, I had a full tank. I'll try again with half or less. I'd say the fuel starvation problem would be your best bet. Does it still happen with a full tank? If so, I don't know. Try what others have been saying. Like the MAF or something.

[savdragos]

Can you please tell me if the fuel consumption is elder now whit the TS2!!
I heard from same friends that the comppresor grows the fuel consumption whit 2-3 Litres/100km.

[Richaraiza]

I averaged it out and with my driving I get ~24 miles/gallon. Don't know what that converts to, but I used to get about 28-30. So really not too bad. Definitely bareable. That's with a TS2+.

[Minnoe07]

Yea, definitely loose a couple of MPG's with the TS2. I lost about 4 mpg with the TS2 and upgraded diff.

[Safar]

My fuel economy went down down ~10-15%, but I do 90% highway driving. If you do a lot of city driving & drive aggressively, you'll be lucky to get 12mpg.

Amazingly it's quite efficient on the motorway, even at high speeds. I measured a full tank when I did an all-highway trip for work, driving between 75mph and 100mph most of the time, and some 40 miles on the German Autobahn between 100mph and 160mph, and I still got about 24mpg.

[Richaraiza]

Nice, that's good to hear about highway miles per gallon.

[kevinterkelsen]

I get 9-10 km/l on highways in the summertime - app. 8 km/l combined in summertime. Wintertime its app. 1 km/l less - i.e 8-9 and 7 km/l - but what the h... it's all in good fun ;o)

[rvd788]

nice work

[ATLZHP6M]

^ Cool man I hope you do get it. Its well worth the money. Its no HPF, but fun none the less.




My car is running fine, man. Pull all the way through RPM's in 3rd. Though, I had a full tank. I'll try again with half or less. I'd say the fuel starvation problem would be your best bet. Does it still happen with a full tank? If so, I don't know. Try what others have been saying. Like the MAF or something.

Cool, thanks for checking man. I have already addressed the fuel concerns with a new pump, filter and the M3 add-on to avoid fuel starvation. I'm guessing my MAF is the culprit although I drove the car and I was able to run thru the RPMs without any hesitation this time. I hate intermittent problems...:banghead:

[Richaraiza]

Yeah, I had a strange weekend. Broke the car friday night. Was driving normally getting off the highway and started hearing some noises. All of a sudden it starts getting louder and abruptly stops with a clunking sound. At first my thoughts were something in the drivetrain just broke. I was at a light and started to go and everything was fine. Battery light comes on and I have no powersteering. Uh oh. Bad news. Belt just came off. I'm no more than a mile away from home and I know the car is going to start overheating. So I keep driving. I know, stupid, right? Well it starts over heating (to my surprise :rolleyes: ) so I pull over immediately and turn off the car. I was able to get the car home this way, but took me at least 30mins-1hr. I just let the car cool a little, started it up and drove a couple more meters and shut it off.

Its really dark so I let the car sit overnight and check it in the morning. What I find is quite confusing to me. It seems my alternator pulley came off the and the bolt to the alternator was completely stripped. Belt to the AC and supercharger came off. The ac belt is fine, but the supercharger belt was a little chewed up. So I was able to go to bmw and get raped for a remanufactured alternator. Even with my military discount I still paid 500 for it. I could have bought one from Tischer for 400ish. I just don't think I'll get it in time. I have to go back overseas on the 4th. So here is some pics of the damage. Also ran a compression test to see if I warped anything from the car overheating and seems everything is normal. If I'm missing any checks please let me know.

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8204


http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8205


http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8206


http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8207

[Minnoe07]

Wow..... that sucks. That's the first time I've seen an alternator pulley broken off from a TS2 car. I had my tensioner fail which broke the oil filter housing. I know the feeling.

[kevinterkelsen]

Wow - it happened to me too.... my alternator also broke - I thought it was a bad tensioner that did not flex enough.. also the alternator was old +10 years.. so as I did not hear of any others I just let i go... were your tensioners old or new?

[Richaraiza]

Pretty new. My tensioner was replaced about a year before I bought the supercharger. Did changing the tensioner solve the problem? I think I have the symptoms of it about to happen again. I think the warning sign is: when you pussh on the throttle you'll feel like its being strained. You'll lose power slightly few a split second and then it'll come back. It's enough to jerk you forward. You'll hear the nut fall off, then you'll start hearing a "tire rubbing" sound. Once you hear the nut come off turn the car off immediately. Or keep checking to make sure the nut is securely fastened at all times.

[TxZHP04]

What you just described almost sounds like belt slip but I'm not sure how that would lead to the situation pictured above.

[TxZHP04]

Cool, thanks for checking man. I have already addressed the fuel concerns with a new pump, filter and the M3 add-on to avoid fuel starvation. I'm guessing my MAF is the culprit although I drove the car and I was able to run thru the RPMs without any hesitation this time. I hate intermittent problems...:banghead:

Still experiencing this problem? Out of curiosity, did the "cutting out" occur at WOT, part throttle (maybe 90%, obviously would have been near WOT), or both?

[///IV]

nice to see more 3 series that can pull on M's....what part of GA you moving to? i would love to check that out one day bud! :woot:

[Richaraiza]

next to savannah in september

[330ciking]

shout out to rich 330ci beat m3

[Richaraiza]

:thanks:

[Richaraiza]

:bump: questions still need answers. I wouls also like to know if there is anyone else having alternator pulley problems or any problem in general. Except startup woes because there is already a thread for that.

[TxZHP04]

No alternator pulley problems on my '04 so far, approaching 25k sc'd miles now. The base plate of my hydraulic belt tensioner was showing signs of cracks when I replaced it though. There's a thread with pics of this around here somewhere, including a few reports of it breaking. No other problems so far.

[lkstaack]

No alternator pulley problems on my '04 so far, approaching 25k sc'd miles now. The base plate of my hydraulic belt tensioner was showing signs of cracks when I replaced it though. There's a thread with pics of this around here somewhere, including a few reports of it breaking. No other problems so far.
In your opinion, should a 330i with around 40K miles have the tensioner replaced during TS2 installation?

[TxZHP04]

In your opinion, should a 330i with around 40K miles have the tensioner replaced during TS2 installation?

I had almost 70k miles on my car when I installed the TS and the tensioner made it over 15k miles with the SC'er before I needed to change the belt, which is also when I decided to pull the tensioner to inspect it. Found hairline cracks in the base plate and decided to replace it before it broke. Whether the condition was simply due to age or somehow caused by the presence of the SC'er I don't know.

It's not that expensive and it certainly wouldn't hurt to replace it. Whether you choose to replace it during the SC'er install or not, I would highly recommend that you remove and inspect it every 15k miles or so when replacing the belt. I'm hopeful that if there are no signs of cracks during an inspection that it will go another 15k without failure. This is my current philosophy regarding the tensioner but I will modify it if it proves necessary....

[kevinterkelsen]

When the alternator broke (+10 years and +140k miles) all elctrics contiued to function on battery, but I have electric fans so they wore the battery out and then the car overheated (standig still - I did not drive the car).

I changed the alternator - could not get a rebuilt one as it was totally destroyed and haven't had any problems since. Squealing noises in the engine bay again now (just like when the alternator broke, but it looks like its dirt in the spinners this time). However, now I'm very aware of the stress the belt puts on the alternator, waterpump, etc. because the belt is so tight as not to slip on the TS pulley.

[Asbjorn@ESS]

Belt tension is unchanged from stock. We have never seen any issues with alternators breaking on any R&D cars or local customers cars, we have only heard of 2 cases this has happened including yours and one of those cars had a custom engine build so things could have happened to the alternator during this build process as well. It is a good idea to replace the belt tensioner at 60-80K as we have seen a 3-4 reports both stock and SC that they can develop material fatigue with age.

[Richaraiza]

Thanks guys for the replies. Asbjorn, thanks for chiming in also. I would like to keep updated on whether there are anymore cases of the alternator pulley coming off. As of right now, all I can do is keep checking to see if the nut is tight along with checking the tensioner. As of right now everything is running how it should except the stupid alternator that I got from BMW. Frickin remanufactured BS. Now my rpms keep jumping ever since I put the new alternator in and they want to charge me 100 dollars at the dealer to run test to find out what's wrong. Frick that. They'll probably blame it on the supercharger. I can buy an alternator for cheaper at checker with a lifetime warranty for 200 bucks cheaper instead of 2 year warranty.

[jetskier88]

damnn man.. this sucks.. im so compulsive that ive changed a majority of the known to be faulty parts even though they never gave out (water pump, ignition coils, thermostat, subframe, etcc... ).. one thing i've been lagging is the belt tensioner but im only at 53k miles

[TxZHP04]

damnn man.. this sucks.. im so compulsive that ive changed a majority of the known to be faulty parts even though they never gave out (water pump, ignition coils, thermostat, subframe, etcc... ).. one thing i've been lagging is the belt tensioner but im only at 53k miles

I'm inclined to believe it is simply an age related thing so you likely won't have issues for a while yet. I'd still recommend periodic inspection with replacement at the first signs of stress cracks.

[Minnoe07]

I would definitely change the the belt tensioner before putting the TS2 in. I would also probably change the belt tensioner every 30,000 miles.

[uhhhmeeer]

:drool: im jealous

[Richaraiza]

Don't be. Save up and get one. Come on! Everyone is doing it.. :4ngie:

[s3th]

The exhaust is so deafening. I almost had to let off the gas it was so unbearable. Sounds like a friggin race car.

http://www.youtube.com/watch?v=dRrO0SOlzVc

i love doing that in tunnels!!

[Richaraiza]

Yeah, I love it too, deafening though.


Ok, update on dyno finally. I found my stock dyno. Its about the same altitude as the supercharger one. Maybe 100ft less. Shouldn't affect the comparison at all. Its too bad I can't edit the supercharger dyno post. Oh well. Its on pg 2 if you want to compare.


http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8642
http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8643



When I get back to the states I've decided to get the smaller pulley to see what the real numbers would be at that elevation with 8.5 psi. Its easier than I thought to change belts and pulleys.

[Len013091]

Hey Rich, I got an LSD. :P :P :P :P :P
AND a 3" Exhaust :P
But no S/C :(

[Richaraiza]

Hey Rich, I got an LSD. :P :P :P :P :P
AND a 3" Exhaust :P
But no S/C :(

:cry: I know about the LSD. I asked about it on the ZHP owners group. 3" piping from the headers back? That's what I did. I feel I'm still +1 on you since I got the SC. :4ngie: :rofl: I'm looking, but can't decide still on which ratio to get and what lock is best for my needs. I might go all out and get a diffonline diff. :dunno: :ben:

[E46mike-izzle]

:str8pimpi

[Len013091]

:cry: I know about the LSD. I asked about it on the ZHP owners group. 3" piping from the headers back? That's what I did. I feel I'm still +1 on you since I got the SC. :4ngie: :rofl: I'm looking, but can't decide still on which ratio to get and what lock is best for my needs. I might go all out and get a diffonline diff. :dunno: :ben:

Yep, 3" for the headers back. I have an 18" muffler at the back and a 14" muffler as a resonator and my exhaust is MUCH quieter than yours. You might wanna look into that.

[Richaraiza]

Idk, I kinda want to keep it. I might buy a quieter one with cats on it to install if I need to do emissions. I'm def keeping this one for track.

[jetskier88]

I would definitely change the the belt tensioner before putting the TS2 in. I would also probably change the belt tensioner every 30,000 miles.

i replaced my belt tensioner the other day.. even though im an 04' i had the mechanical tensioner, i thought it shouldve been hydraulic... anyways when i looked at my old tensioner, damn thing looked so solid. hard to believe these things break.

[Richaraiza]

^Any thoughts of getting a dyno done yet?







Throwing a couple of decisions up in the air right now that I would like to see some opinions on from those of you who are keeping an eye on the thread.

My dilemna is I'm thinking of (keep in mind I'm dead set on keeping my car) buying an M3. I should have enough money to do so in April (pushing it though). I'm also really thinking of going stage 3 when I get back also. I can't do both, obviously, but if I get the M3 I would like to eventually get an HPF kit for it. If I go the stage 3 route I'll be getting everything I've wanted for my car. IE: interior mods, Exterior mods, and the rest of the performance upgrades. Don't have a place to store both car, but I can make something work.

My other concern if I go stage 3 is the fact that I really don't have time once I'm back to put the kit on because I don't have another car. I would have to do it as soon as ESS is done perfecting the kit (hopefully soon) so it will be done once I'm back. I would really like to get a dyno done at sea level so I could see the differences in stages and also let you all know. So, ..... I think I got everything.... what do you all think I should do given the circumstances?


Oh, and Doc? If you say you aren't selling your M3 anymore? It will makeup my mind for me. :)

[docwyte]

Just buy my car Rich. Works perfectly and makes a ton of power...

[Richaraiza]

Damn, that was quick. :rofl:

I really, really do, but won't be able to afford it with the supercharger most definitely. I keep going back and forth on whether I want it or not. If I do buy an M3 it most likely will be yours. Unless I get a smoking deal on another one.

[docwyte]

hehe. No worries, the charger can come off it you like.

[azzy989]

you're thinking about stage 3 :yikes: :cry:.......I CAN HAAAAAZ haha

[Richaraiza]

you're thinking about stage 3 :yikes: :cry:.......I CAN HAAAAAZ haha

If you get a manual ya bastid.

[azzy989]

:neener: mr...200 torque

[Brandond11]

:neener: mr...200 torque

Almost....

[azzy989]

no.... mr...200 torque is actually araiza. since his car made 200 wtq stock :rofl:

[Richaraiza]

:4ngie: Mr. 325zhp.

[docwyte]

You know you want godzilla.... :D

[jetskier88]

initially if you wanted an m3? why not just buy the m3 and s/c instead of your 330ci?

[Richaraiza]

You know you want godzilla.... :D
:luv: so undecided...


initially if you wanted an m3? why not just buy the m3 and s/c instead of your 330ci?

Initially, yes I wanted an M3. I couldn't afford it at the time of purchase. So I settled for the ZHP. I bought it brand spankin new with the options I wanted so it means a lot to me and don't want to get rid of it now. Eventually, what I want is a ZHP dd and an M3 beast. I want to give my baby all the attention she deserves also. I can wait on the M, but the oportunity to buy is soon so I'm parted half and half right now. Get stage 3 and wait a little longer or buy M3 and wait to upgrade one of them later. Either way, I don't think I'll be satisfied.:tsk:

[jetskier88]

:luv: so undecided...




Initially, yes I wanted an M3. I couldn't afford it at the time of purchase. So I settled for the ZHP. I bought it brand spankin new with the options I wanted so it means a lot to me and don't want to get rid of it now. Eventually, what I want is a ZHP dd and an M3 beast. I want to give my baby all the attention she deserves also. I can wait on the M, but the oportunity to buy is soon so I'm parted half and half right now. Get stage 3 and wait a little longer or buy M3 and wait to upgrade one of them later. Either way, I don't think I'll be satisfied.:tsk:

oh i see.. i had thought you recently bought ur zhp.. i also got the car new for a 16th bday present... i had fun modding it but now im done... although i know many m3 owners here will disagree, i think it would not be a wise choice to buy an m3 also. they are relatively the same caliber car. save your money and get something better (maybe new m3???).. Without change there is no innovation, creativity, or incentive for improvement ;)

[BadBoostedBmwM3]

oh i see.. i had thought you recently bought ur zhp.. i also got the car new for a 16th bday present... i had fun modding it but now im done... although i know many m3 owners here will disagree, i think it would not be a wise choice to buy an m3 also. they are relatively the same caliber car. save your money and get something better (maybe new m3???).. Without change there is no innovation, creativity, or incentive for improvement ;)

That must have been a really nice 16th b-day present. BTW, how old are you?
I got a BMW for my 16th b-day present as well, but definitely not a 330 ZHP.

[Richaraiza]

I had to pay for all my stuff. :(

[azzy989]

:eeps:

[Richaraiza]

:hi:




Found some more pics.

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8926

http://forum.e46fanatics.com/picture.php?albumid=1280&pictureid=8927

[Richaraiza]

So I've decided not to buy the M3 and now I'm on a modding binge. This is what I have so far. I've just spent about $6000.00 on parts the last 2 weeks. Here's the list. No real pics yet since I'm overseas, but come May time I should have some. I'll have the shop take pics of the difference between parts.

Diff bushings, engine mounts, reinforcement kit (all pieces. I think I got the front pieces too.),fuel pump, fuel filter, thermostat, water pump, RTAB's, transmission mounts, subframe bushings, rear adjustable control arms, rear adjustable endlinks for swaybar, 3.23 LSD Diff from diffsonline, new front and rear spring rate for TC Kline setup, CF trunklid, Evo 3 SSK and DSSR and possibly a meth/alcohol kit.

I don't think I missed anything? Can anyone think of anything else I should get? Open to ideas.

[TxZHP04]

Good call on the 3.23 LSD.

[jetskier88]

Good choice on not getting the M3. Nice upcoming mods. But best advice, having already done almost everything possible to my car, stay with what you've already invested. Save up the rest for a new car.

[Richaraiza]

I hear ya, I would love to get a Gallardo too some day.:4ngie: Just trying to plan far enough ahead to eliminate some of the mechanical problems that come with the extra power. Like wear and tear items.

[jetskier88]

I hear ya, I would love to get a Gallardo too some day.:4ngie: Just trying to plan far enough ahead to eliminate some of the mechanical problems that come with the extra power. Like wear and tear items.

oh yea definitely.. preventative maintenance is a must.. dont forget to change your belt tensioner, its been known to go out especially on the ESS TS owners

[Richaraiza]

Done :thumbup:

[T330]

:eeps:

[Richaraiza]

This thread too? :rofl:

[Richaraiza]

Here's some new mods I'll be putting on in the next month. Mmmmm....
More to come soon. :4ngie:
Still have the diff and subframe kit to get pictures of.

Trailing arm bushings
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10344


Engine/Transmission mounts
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10345
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10346


Evo3 SSK
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10347


Forgot the rates, but I think I remember getting #600 and #700
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10348
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10349


Solid Diff Bushings
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10350


Rear Adjustable Control Arms
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10351


Rear Adjustable Endlinks (swaybar)
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10352


Maybe this. Its sitting on standby if I decide to put it on. kinda scared because I don't want to break anything. :eek:
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10353

[secono330ci]

Your car is my idol, I really wish I had the money to do what you did with it :thumbsup:

[Richaraiza]

Thanks. Good to here I have fans out there :bow:

[McSpeed]

Meth injection?! Is that allowed with a TS2+? ;)

[Richaraiza]

Its worked for others so I say, why not? But then again I also say, I scared. Of blowing my engine:)
Still waiting on that dyno Jetskier88
:eeps:

[kevinterkelsen]

Looks really interessting - where did you get the springs? is it front 600 and rear 700 and how did you specify springrate?

[Richaraiza]

For your first question.
here: (http://www.tcklineracing.com/springs.htm)

Second.
By how, do you mean why I chose this rate? I chose it because I need something quite stiffer because I had the #450 and #500 and I was rubbing like hell in the rear WOT. Plus, I'm going to be tracking and autocrossing more so it'll keep boddyroll to a minimum.

[Richaraiza]

Subframe kit and essential studs and nuts for the wheels.
http://forum.e46fanatics.com/picture.php?albumid=1970&pictureid=10473

[kevinterkelsen]

Hi, thanks for the answer - I can't se the link under here - would you please repost it? ok, i totally understand the need for higher springrates - I've been struggling with this my self. To cut a long story short the extra weight of the TS and a cast iron block (85lbs) makes the car nose heavy - I want neutral handling to slight oversteer. So I have tested several springs (and sways) and I'm currently using 330 diesel springs infront (front axle load is 1130 kg), i.e. the diesel engine weights almost 60 kg. more that a 330i engine.

Are your rear springs linear or progressive? Most are progressive which I find problematic in terms of car control - so I had to find some linear springs (e46 compact) - they are much more predictive - easier to "read" when the rear breaks away.

[Richaraiza]

Just click on "here" Should pop up. If not here it is again in a different way.
http://www.tcklineracing.com/springs.htm

[jetskier88]

Its worked for others so I say, why not? But then again I also say, I scared. Of blowing my engine:)
Still waiting on that dyno Jetskier88
:eeps:

lol you wont blow your motor.. i didnt adjust anything, i simply added the meth injection to my setup... even if it didnt add any HP, it would act as a safeguard as it cools your motor.

BTW DYNO NEXT WEEK. its spring break and ill be home! remind me this weekend! i want to do this before the weather starts heating up.

[McSpeed]

lol

[Richaraiza]

Hi, thanks for the answer - I can't se the link under here - would you please repost it? ok, i totally understand the need for higher springrates - I've been struggling with this my self. To cut a long story short the extra weight of the TS and a cast iron block (85lbs) makes the car nose heavy - I want neutral handling to slight oversteer. So I have tested several springs (and sways) and I'm currently using 330 diesel springs infront (front axle load is 1130 kg), i.e. the diesel engine weights almost 60 kg. more that a 330i engine.

Are your rear springs linear or progressive? Most are progressive which I find problematic in terms of car control - so I had to find some linear springs (e46 compact) - they are much more predictive - easier to "read" when the rear breaks away.

I'm almost 100% positive that the fronts are linear and the rears are progressive. I'm still learning about suspension parts. :rolleyes:

lol you wont blow your motor.. i didnt adjust anything, i simply added the meth injection to my setup... even if it didnt add any HP, it would act as a safeguard as it cools your motor.

BTW DYNO NEXT WEEK. its spring break and ill be home! remind me this weekend! i want to do this before the weather starts heating up.

Cool, will let you know. :woot: If you see 10 PM's from me. You know what you have to do.... :eeps:

[bluejeansonfire]

I think the TCK rear trailing arm beehives are that shape to fit into the upper mounting point, but I think they're linear of very nearly linear. Notice the coils don't begin to get really close to each other or anything, they end sort of like traditional linears. I think the TCK stuff is really cool (especially how well the rear springs fit), but I refuse to pay more than 50$/spring as their are plenty of places that sell linears you can spec out yourself for that rate.

[PEI330Ci]

I think the TCK rear trailing arm beehives are that shape to fit into the upper mounting point, but I think they're linear of very nearly linear. Notice the coils don't begin to get really close to each other or anything, they end sort of like traditional linears. I think the TCK stuff is really cool (especially how well the rear springs fit), but I refuse to pay more than 50$/spring as their are plenty of places that sell linears you can spec out yourself for that rate.

I guess it depends if you want a spring that's withing 1%, 3%, 5%, or 10% of spec, and how well it holds it's "free height" over time.

Most people would be very hard pressed to tell the difference with a 50lb/in change in spring rate though....

[bluejeansonfire]

I guess it depends if you want a spring that's withing 1%, 3%, 5%, or 10% of spec, and how well it holds it's "free height" over time.

Most people would be very hard pressed to tell the difference with a 50lb/in change in spring rate though....

I have the issue of fully linear springs in the rear. When installing a buddy's e36 rear sway bar about a year back, I noted his awesome idea of the use of zip ties to center his spring when it's released. At the time I was on a 450lb rear spring, a tall spring, no issue with that. But for the e30 with 550lb linears and my upgrade to 600lb springs on the e46, which have me tucking the rim with 17s, I employed this ingenious method.

Regarding a change in spring rates, I think it's hard to feel a difference in stiffness, however a difference in balance can be staggering over a 50lb/in difference. I went from 450lb springs in the front of my car, at 450 square, which had me plowing left and right, to after changing the front springs to 400, which balanced the car out much better.

I desperately want to go back to 450lb springs in the front again, as I also want to be low in the front as well as balance the car. But I also regret the feeling of unloading the spring fully in the front on the inside wheel when cornering.... only to have a sensation of wrecking into ground when the car shifted its weight back onto that strut and it reseated the spring... The proper solution is a shorter shock body, but for now, I will settle for helper springs.

[Richaraiza]

I think the TCK rear trailing arm beehives are that shape to fit into the upper mounting point, but I think they're linear of very nearly linear. Notice the coils don't begin to get really close to each other or anything, they end sort of like traditional linears. I think the TCK stuff is really cool (especially how well the rear springs fit), but I refuse to pay more than 50$/spring as their are plenty of places that sell linears you can spec out yourself for that rate.

Makes sense.