Threading jacking... 325i TC/SC???

[pimpslapmyride]

This is where is stle it... Whats the laundry list for getting your 325i to 350bhp? I have a hard time bitting off on a TC or SC alone! Cams, valve springs, 2.5L to 2.8L, 3.5 inch exhaust...? Chris@technik, do you have laundry list for getting your car this fast, but still keeping its reliability? I stole this off the 325is Supercharge a 325i? thread... Chris from technik wrote me back... To get your 325 to that level you'd need our stage 2 Supercharger kit and headers, cams if possible as well. Following that route you will definitely attain the power numbers you're after. The driveability of the car depends greatly on how you go about modifying the car, if you add suspension, brakes, and more power naturally the car will act accordingly. If you're thinking along the lines of the car still being streetable, I can assure you the car will feel just like the car you orginally purchased, only with more power. Let me know if there's anything else I can do to assist you, thanks-
Now i have a few question for the fellas at technik, or any other gurus outh there!

Will putting a 2 x 3 to 1 header on a single 3.5 inch exhaust setup inhibit the exhaust flow? Do i need a true blue dual pipe setup, whats the pros and cons with a single pipe?

What comes first? Cams or headers?

Can i run NA cams with FI? What exactly is the difference with NA cams and FI cams?

Is it the pulley that determins the PSI for a SC? And is that all the difference between a stage I and II setup? Are your stage one fuel injectore rated for II/III upgrades?

Also, please! Anyone else that has words of wisdom aout what else is required with a FI upgrade, sans BBK and suspension. thanks everyone!

[Chris@Technik]

This is where is stle it... I stole this off the 325is Supercharge a 325i? thread... Chris from technik wrote me back...
Now i have a few question for the fellas at technik, or any other gurus outh there!

Will putting a 2 x 3 to 1 header on a single 3.5 inch exhaust setup inhibit the exhaust flow? Do i need a true blue dual pipe setup, whats the pros and cons with a single pipe?

What comes first? Cams or headers?

Can i run NA cams with FI? What exactly is the difference with NA cams and FI cams?

Is it the pulley that determins the PSI for a SC? And is that all the difference between a stage I and II setup? Are your stage one fuel injectore rated for II/III upgrades?

Also, please! Anyone else that has words of wisdom aout what else is required with a FI upgrade, sans BBK and suspension. thanks everyone!


I'll begin with the cams or header question. On the E46 3 series the cats are located in the headers, which creates a bottleneck when adding FI. The addition of headers will allow the motor to more efficiently expell the exhaust gases being pushed through the motor via the blower (supercharger). After adding the blower, headers would be the next best modification when seeking more power, basically headers would come before cams.

Cams would be the next step to helping the motor take in and expell more air while seeking to be as efficient as possible. Keep in mind that one of the key elements to making reliable power is the ability of all the parts you add to work together seemlessly. This will ultimately result in a car that'll make more consistent power and prove to be more reliable in the long run as well. To clarify you wouldn't want to run NA cams on an FI application because NA cams aim to keep the most air going in and out of the motor as possible. If you were to use NA cams on an FI application you wouldn't be able to fully utilize the boost that you're running in the motor, resulting in poor, or not so desirable performance or driveability.

The pulley determines the amount of boost that the supercharger will provide. Keep in mind blowers are boost limited, meaning each blower will only provide x amount of boost. The tm-12 is the most efficient and reliable blower for ms-45 equipped cars (6.5-9.5 psi) while the tm-12(lower boost applications) or tm-15 (higher boost applications,9.5- 11+ psi) may be better suited to ms-43 equipped cars. The difference between our stage 1 and 2 kits is a pulley upgrade.

Let me know if there's anything else I can do to help, thanks-

[pimpslapmyride]

Chirs, you guys rock! An additional question about the headers, will having a single pipe present any real problems with expelling exhaust?

And do you guys do any financing?

[pimpslapmyride]

I have one other question... When buying a BBK, do you HAVE to get from and rear brakes?

[Chris@Technik]

Chirs, you guys rock! An additional question about the headers, will having a single pipe present any real problems with expelling exhaust?

And do you guys do any financing?

No, however I would look into purchasing a new exhaust though. Anything to help increase flow, will definitely help out, relatively at least.

I'm sorry but we do not offer any financing.

I have one other question... When buying a BBK, do you HAVE to get from and rear brakes?

You don't have to buy a rear kit too, however we offer the option to our customers. The majority of all braking is done by the front brakes, adding a rear kit will aid in the overall brake balance of the car.

[pei330ci]

Will putting a 2 x 3 to 1 header on a single 3.5 inch exhaust setup inhibit the exhaust flow? Do i need a true blue dual pipe setup, whats the pros and cons with a single pipe?

A lot of E46 race cars use a 3-1 headers like Technic and Supersprint offer. They then use a Burns 2-1 "Y" pipe connected to a single 3 or 3.5" exhaust pipe that in some cases is routed to exit at the rear, and in other cases exits under the passenger's side door. It's a highly expensive custom exhaust setup that is over double the cost of doing a bolt on dual 2.25" exhaust system like the UUC TSE3.

A single 3.5" exhaust pipe flows better than a dual 2.25". It is however more difficult to route and can have poor ground clearance when compared to the dual 2.25" exhaust. Another thing is that larger exhaust piping is louder and requires a huge muffler to make street legal noise specs.

The dual 2.25" setup has greater ground clearance, and is quieter.

I don't think the hassle of the single larger exhaust pipe is worth it for a street car. TaZaM3's car put out 600rwhp with a dual 2.25" exhaust...

[pimpslapmyride]

good goudge, thanks... I already have a single 3.5 on mine, was really pissed cause i wanted the raush style exits by the rear doors on both sides. So joining the 3 to 1 to a single will take a little standard welding, i figure that shouldnt be to bad.

[BM_power]

Cams would be the next step to helping the motor take in and expell more air while seeking to be as efficient as possible. Keep in mind that one of the key elements to making reliable power is the ability of all the parts you add to work together seemlessly. This will ultimately result in a car that'll make more consistent power and prove to be more reliable in the long run as well. To clarify you wouldn't want to run NA cams on an FI application because NA cams aim to keep the most air going in and out of the motor as possible. If you were to use NA cams on an FI application you wouldn't be able to fully utilize the boost that you're running in the motor, resulting in poor, or not so desirable performance or driveability..>>

Hi Chris ,

What if mine is a 330 auto tranny ?will adding cam to FI actually increase more power and yet stress the tranny ??thanks
am using sk1..

[Chris@Technik]

Hey,

Yes, addingn FI cams to an FI application will increase power, the gains will be relative to the amount of boost you're running. The more boost the better the gains for the most part. Do you have headers already or are you looking to add headers too? If you haven't already added headers you might consider doing that first, seeing how the header is the primary bottleneck. Cams would only try to push more air out and just add to the bottleneck effect. As far as cams adding stress to the tranny, no they will not. Let me know if there's anything else I can do to help, thanks.

[BM_power]

Hey,

Yes, addingn FI cams to an FI application will increase power, the gains will be relative to the amount of boost you're running. The more boost the better the gains for the most part. Do you have headers already or are you looking to add headers too? If you haven't already added headers you might consider doing that first, seeing how the header is the primary bottleneck. Cams would only try to push more air out and just add to the bottleneck effect. As far as cams adding stress to the tranny, no they will not. Let me know if there's anything else I can do to help, thanks.


Am already on hiop header and eisenmann exhuast . my sk1 is still on the gound ..was think of maintaining low boost using 5.5pully so that i can also add FI cam in future.. what ya think ?
or am i right to say with all the above in the car now but still maintaining low boost ,i will not have the full potential of all the above mod!!