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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 08-17-2009, 11:25 AM   #1
mattrpav
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'04 33ci performance improvement suggestions?

I have an '04 330ci and am looking at a Dinan D760-0402 intake. Dinan's site doesn't seem to have performance metrics for this product anymore, and the new style is a bet cheaper.

I'm considering software upgrade as well, but Turner's is only showing 6-9 HP for intake+software. $600-$700 seems high for that amount of hp increase.

Any ideas on true impact of adding just the intake?

Other suggestions?

Thanks.
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Old 08-17-2009, 11:30 AM   #2
secono330ci
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Intakes wont give much power, maybe 2-3 whp thats about it. Our stock airboxes are actually pretty efficient so it's up to you whether you want to spend the money or not. Use the search function, these topics have been beaten to death.
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Old 08-17-2009, 01:09 PM   #3
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A CAI to me only makes the engine louder. You won't feel 2-3 HP, if it even gives that. My old 323 sounded much better with a CAI. I can't wait to get one for my new car.
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Old 08-17-2009, 01:13 PM   #4
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The "cold air intake" is basicly just a sound thing, Dinan's is the best one "performance" wise, but an intake isn't the best "performance" mod you could do. Also, software won't increase your hp, it will only change when it's delivered. It's kind of like doing a short shifter, doesn't make the car faster, but it makes it more fun.

Underdrive Pulleys would be a good place to start along with exhaust and headers. Want to step it up more, get some ZHP (Performance pckg) cams and software. Also, not sure if you have an auto or manual but you could do a gear ratio swap.

Oh, and next time,
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Old 08-17-2009, 04:34 PM   #5
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if you're a 6speed then get a 3.46 diff. your revs at 60 will be 2k;after the change out you will be 2k at 50. not too damaging to your mileage.
if you have a 5speed it will be much harsher on mileage.
most people get a drop in streamline or k&n. i have the old-style dinan snorkel and might get the new-style dinan if the cost isn't astronomical!
we'll see what we'll see after car control school next month.
ps
i also have the dinan s2 programming-much better throttle response.
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Old 08-17-2009, 04:47 PM   #6
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IMO cams, headers, and the 3.46 diff will make the most difference you are looking for. Obviously you would want to tune for the cams and headers as well.
I will be going with the ZHP cams, EBay headers, and Active Autowerke tuning.

As far as an intake goes, from my research, there wont be much power difference between a K&N drop-in and a Dinan on a stock engine.
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Old 08-17-2009, 04:51 PM   #7
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its tough to to ANYTHING to N/A cars, do the DIFF if anything, but gas mileage will go down (higher rev per mph)
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Old 08-17-2009, 04:59 PM   #8
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I will be going with the ZHP cams
If you're going through all the expense of swapping cams, why not do Schricks and get more out of it?

http://www.turnermotorsport.com/html...46-M54-SCHRICK
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Old 08-17-2009, 08:02 PM   #9
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If you're going through all the expense of swapping cams, why not do Schricks and get more out of it?

http://www.turnermotorsport.com/html...46-M54-SCHRICK
Because they are $1200

Not to mention I do all my own engine work so there isn't nearly as much expense as you think.
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Old 08-17-2009, 08:07 PM   #10
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Bang for your buck.

1) headers
2) Diff

but for true power look into FI(turbos and superchargers)
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Old 08-17-2009, 08:41 PM   #11
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Because they are $1200

Not to mention I do all my own engine work so there isn't nearly as much expense as you think.
All the more reason to go with the more aggressive cams. The Schrick are 264 on the intake versus 248 for the ZHP (both are 248 exhaust). Big difference.

DIY cam swaps without the special tools and getting the timing right as well as not warping the cams can be tricky. Make sure you talk to members "330i ZHP" and "pei330ci" for some pointers before you dive in - it's likely to save you some hassle. It can be done but it's not your average cam swap.
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Old 08-17-2009, 09:11 PM   #12
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All the more reason to go with the more aggressive cams. The Schrick are 264 on the intake versus 248 for the ZHP (both are 248 exhaust). Big difference.

DIY cam swaps without the special tools and getting the timing right as well as not warping the cams can be tricky. Make sure you talk to members "330i ZHP" and "pei330ci" for some pointers before you dive in - it's likely to save you some hassle. It can be done but it's not your average cam swap.
I appreciate your opinion about the cams, however I'm just not looking to spend that kinda money. Times are tough and I have a lot of other plans for my money. Plus, I'm trying to keep this car as OEM as possible.

Also, thanks for the heads up on the cam swap. I'm pretty mechanically inclined so with the advice of the members you mentioned, shouldn't be a problem.

OP, sorry that we thread-jacked
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Old 08-18-2009, 10:22 AM   #13
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Thanks for the responses. I have read previous posts, but this Dinan CAI is the old "tube" style that supposedly brings more power. The dealer is saying 15 hp (which i know is an overstatement), but I'd take 10 HP for the money. I just haven't seen anything that backs up the claim-- mostly seen 2-3 HP range.
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Old 08-18-2009, 11:59 AM   #14
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I appreciate your opinion about the cams, however I'm just not looking to spend that kinda money. Times are tough and I have a lot of other plans for my money. Plus, I'm trying to keep this car as OEM as possible.

Also, thanks for the heads up on the cam swap. I'm pretty mechanically inclined so with the advice of the members you mentioned, shouldn't be a problem.

OP, sorry that we thread-jacked
Whats the point of staying as oem as possible?
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Old 08-18-2009, 03:05 PM   #15
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Whats the point of staying as oem as possible?
I'd assume personal preference.
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Old 08-19-2009, 09:04 AM   #16
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I'd assume personal preference.
Doesn't make a lot of sense, unless he's prepping a track car that has to stay close to stock... Plenty of high quality aftermarkets out there
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Old 08-19-2009, 05:58 PM   #17
Naptown Bimmer
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Doesn't make a lot of sense, unless he's prepping a track car that has to stay close to stock... Plenty of high quality aftermarkets out there


Well you know what they say... "opinions are like ***holes, everybody's got one!"

Seriously, it is personal preference, I didn't ask for opinions on what I'm doing to my engine.
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Old 08-20-2009, 12:25 AM   #18
secono330ci
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Originally Posted by mattrpav View Post
Thanks for the responses. I have read previous posts, but this Dinan CAI is the old "tube" style that supposedly brings more power. The dealer is saying 15 hp (which i know is an overstatement), but I'd take 10 HP for the money. I just haven't seen anything that backs up the claim-- mostly seen 2-3 HP range.
I doubt there is anyway you're going to get 10 hp out of an intake. Companies that sell intakes will dyno the car in a perfect environment in order to acheive increased results. In everyday driving situations you will not be gaining 10 hp.


As for cams, will schrick cams cause any rattling or future problems down the road since they're even more aggressive than zhp cams?

zhp/bmw performance cams from tischer - $600
Schrick - $1200

Worth it?

Last edited by secono330ci; 08-20-2009 at 12:27 AM.
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Old 08-20-2009, 12:37 AM   #19
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I just have headers and exhaust and i recently outran a '10 328 sedan with the new direct injection 3.0 and im rollin on heavy 19's with a 2.95 diff and sub and box in the trunk. Pretty good considering how my setup is not ideal for performance at all.
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Old 08-20-2009, 08:50 AM   #20
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Well you know what they say... "opinions are like ***holes, everybody's got one!"

Seriously, it is personal preference, I didn't ask for opinions on what I'm doing to my engine.
Have fun with mediocrity!
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