I have a 2001 audi s4 and was looking at the ko4 turbo upgrade. Do these turbo kits get 350-380whp with the flash software. Would I get more power if I got it professionally tuned. If i added rs4 cams would it give me a decent increase in power???

 

look at awe-tuning, apr, ASP, etc. websites to get some initial answers. Yes on the whp question. Custom tunes available by EPL for one (probably others) and to each their own. you should go with someone that has representation close to you.

 

No, you will not get 350whp with K04's & software. You need a lot more then that, like turbo back exhaust, IC's & a fueling kit. It's going to cost about $10k for a stock car to get 350whp.

 

If i got ko4 turbo, fueling kit,ic,downpipes,exhuast, and once i hit 350whp is their room too grow by adding other parts like cams,intake,and a good proffessional tune could i get 400whp or would i need to start to look at hybrid or gt25 turbos