Hello all,
I am new here, just bought a 2001 B5 S4 with 48k in miles, but before I get flamed for asking any noob questions rest assured I have searched all over this board and elsewhere trying to answer my own quesitons, I hope none of the questions that I do ask insult your intelligence and if they do I am sorry. Now, that being said, I am bringing my car into the shop to have it chipped (APR ECU), I also will be replacing the DV's and most likely the TBB (possibly with apr bi-pipe). I also will be looking into a turbo timing system, or something of the sort to make my life just a bit easier as far as waiting for the turbos to cool (any suggestions here are much appreciated). So what I really want to know is this, I want to know where I can find some good documentation on the S4 bi-turbo system so I can research just how that system works. I would like to get a bit of insight so I can start doing the proper upgrades and maintenance, vs just doing something that others have told me. I have had only marginal luck finding any site or area that gives a good breakdown of the system, somewhat like a manual explaining just how the bi-turbos function, how oil temp affects life, turbo lag (which I know is minimal in the S4), etc...

Thanks alot of any links or advise you guys have.

Also any recommendations for future upgrades (save the K04 kit, as I will be doing that when the stock turbos go) would be appreciated. My goal is to make the car as quick and comfortable as possible without making it a rice rocket....I hate rice.

 

I guess to many questions sorry. Yesterday I got the APR ECMS system with stock and chipped settings, and replaced the Diverters with Stratmosphere DV's. I do have 1 question though. Many people talk about the TBB being unreliable. What do you think about me getting an APR bi-pipe to remedy that??

Thanks again.

APR Bi-pipe

 

Bi pipe or save money and get hte Samce TBB, much stronger than stock, and will work jsut as well sa the bipipe. There have been a *few* (not very many at all) of stage 3 cars popping the samco tbb off, but all they had to do was screw the clamps back on and it was all good.

 

Great thanks, is any other benefit to getting the bi-pipe then - says that it relives spikes........not sure how valid that really is.