Hey eveyone, I seem to be having a boost issue with my 00" S4. I don't seem to have the entire NUT out of the turbos I should. I still have power but not that infamous torqueiness from 2500-4500 rpms. It just seems to stay a steady slow climb but a SLow Climb.
First to say I just replaced all the hoses with samco hoses because I thought it was boost leaksSame problem No such change. Then Iwas told to change the Diverter valveswhich I changed with brand new 710p's out of a porshe 911 because I have a hopok up at porshe. Still No change in issue. Then someone told me to pull out the stock computer and put in my apr chipped ecu, and I had the same problem just a little faster of a slow climb if you get my drift. Any suggestions?? Someone also told me it may be the plugs and coils?? Or a computer code misfires maybe that I didnt erase??Anyone out there that can Help me would be a big help!

 

First, check for stored codes, your answer may be in there.

You never checked or replaced the TBB, or did you get the Samco?

You should log block 115 with Vag-com & see what the requested vs actual boost is.

My guess if there isn't a leak, that either your MAF or N75 is failing.

 

2ks4 Thanks for at least a place to start. I replaced the TBB with the samco so I shouldnt be haveing any rips or leaks.

 

where can I buy a vagcom??

 

Got & read the FAQ.
http://www.ross-tech.com/

One thing you can do right now, is unplug the MAF & see if it runs better, if so, bad MAF.