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!

00"Nagaro Blue S4
Samco Hoses
710p's Out of a 911 Porshe
APR 93octane chip
AWE Transmission stablizer bar
AWE Snub Mount
K&N Drop In
Tein SS Dampers 2"F 1.25R
Tein EDFC
Avus 17" with cooper Zeons