Here's the problem. I just got my car tuned last week, and my mechanic said my car was running excellent. My boost was set at 18 psi when I got it back, and was moving pretty fast at that. Yesterday I noticed, when I accelerated the speed wasn't there, I was only pushing 14-15 psi of boost. So, I looked under the hood, to check the boost controller, it looked fine, then I ran the car again, same results. I then adjusted the boost controller to give me less boost, around 8 psi, and that worked just fine, but when I went to adjust my boost to the max of 25 psi, it still only put out 14-15 psi again. There are no funny sounds or anything else wrong with the car. The boost line to the turbo looks secure. Any suggestions, before I call my mechanic and have to drop more $$$!
Any feedback would be much appreciated.
Here are all my engine mods:
Ported VF22 Turbo I can push 25psi of max boost, but most times keep it at 18-20psi
STI Pink Injectors
Walbro 210lph Fuel Pump
Greddy Front Mount Intercooler
HKS Super Sequential Blow off valve welded on FMIC pipes
Silicon Hoses and couplers so it does not explode under heavy pressure
Gruppe-S Uppipe with Steel Gasket
Helix V2 Downpipe with Steel Gasket, the downpipe is off at the moment, and the both cats are on.
Prodrive Oval Tip Axle Back
Turbo XS Shorty Intake
STI RA Version 6 Gear-Set transmission cryo treated with Micro Polishing
Console Bezel with 30psi Boost Gauge
manual Boost Controller
TurboXS Unichip custom map to what I have minus the FMIC