Hello i am wondering if anyone has done a STS style turbo system on their 03 audi a4 3.0L. i have done 3, 2 are custom one on an s10 pickup 4.3L , a ford 5.4L, and helped a friend with his camaro install. Recently my friend has wanted alot more power out of his a4 since his goals are a grand touring car. The supercharger from PES looks clean and im sure well engineered but the price tag is a little steep for him. not that its to expensive just the amount of hp you get from it.

so first i have a few basic questions before i actually present him with a priceing on parts.
Things i need to know- First off its an 03 Audi A4 3.0L v6 quattro tiptronic

We are looking for 300AWHP can the stock motor handle that?
Weakest part of the motor?
How much hp can the tiptronic transmission handle?
Weakest part of the transmission?
What is compression ratio on the 3.0L?
Stock fuel injector capacity. WHP?
Stock fuel pump capacity. WHP?
Does anyone tune for bigger injectors on a 3.0L?

If no one can tune the 3.0L for bigger injectors i am thinkin i can go with an MSD 6plus to controll ignition timing and an SDS EM-4 : EIC (extra injector controller) to control the fuel and timing on boost

thanks for the info.

good questions.

300HP is relativly posible.
weakest part in the engine, well I would think none, read up on the superchargers. the HP amount somewhat same and if breaks it be becouse of the boost.
tranny, not my major. but I would think you woulnt break it.
compresion should be in rounds of 10 to 11:1
the tuning, simply piggy back the ECU, the stockers should be enough to hold the AF.

thanks for the information, i dont know if i clarified but i am looking for 300awhp but if you did get that correctly then thats awsome.
a piggy back such as a megasquirt unit could control the injectors or some extra injectors if need be or the SDIC which i said in my post before.

10:1 is scaring me and 11:1 ahhhhhh why even bother with boost i hope that it @ least 10:1 be more boost friendly than the 11:1. although they do boost s2000's w/ 11:1 compression so i will look into that a little more.

actually, you can easily go to 8psi safe. and tempting 10psi with proper intercooler and probably water injection.
piggy back, I know of, is SMT # from perfect power. they piggy back in newer models of device, fuel, ignition, boost (waste gate) and have 8x8 matrix per each thing.

read a book called 0-89586-135-6
it has lots of info and short and all that is needed.

10 to 1 isnt to bad.....def not ideal but not to bad. iv seen turbo ls1 camaro's. the ls1's compression ratio is abotu 10:1 and there are turbo kits for stock ls1's with stock internals. but idealy a turbo engine should have something like 8 to 1 like the dsm's (8.1:1).

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daily:
1999 A4 Quattro 2.8l 30v
project:
1972 Datsun 240z
+5.3l lm7 v8
+Garrett gt4082 turbo
+Borg-Warner t56 6spd

fs:

correction dsm compression ratio is 8.5 to 1 or 7.8 to 1

__________________


daily:
1999 A4 Quattro 2.8l 30v
project:
1972 Datsun 240z
+5.3l lm7 v8
+Garrett gt4082 turbo
+Borg-Warner t56 6spd

fs:

its not a big deal on the compresion, the big deal is cooling the charge. without intercooling, there not much you can do on it.