22 psi still under warranty. HELP
Okay guys its me again, I'm the guy who is hitting over 22 psi on a Cobalt SS/SC that SHOULD NOT be hitting that much boost. The only mods i had at the time were an Injen CAI and GMPP Stage 2.
Many of you advised me that it was a clogged catalytic converter or that my exhaust was too restrictive.
So i took your advice and had the GMPP catback exhaust and a magnaflow hi-flow cat installed.
But i'm still overboosting at 22psi. I have taken it to two different mechanics, one was a very good GM mechanic and the other guy was a western auto head mechanic, and both of them cannot figure it out.
The stock boost gauge has been replaced and a new boost solenoid has been installed. (under warranty), so i know its not a bad gauge/read.
The car runs fine and my gas mileage is awesome. Occasionally after running it hard the blower whine will start to surge at around 6-7K RPM. But it does not seem to be a problem and acceleration does not suffer.
Please help! I love my Cobalt and do not want to melt the blower/blow the engine.