Last night I replaced my plastic inlet, and intercooler Y pipe. I had the intercooler/bypass valve off also.
Now the problem is strange I deffinatly have a leak some where but I'm still hitting 16.5 psi under full trottle but as soon as I'm off full throttle the boost drops to 0, if crusing at 3000RPM at half throttle I'll have no boost but stomp on it I have momentary full boost? I have never seen a leak quite like that usually you won't hit target boost with any sort of compressor side leak. At this point I'm leaning towards BPV gasket not sitting right. Any imput would be appreciated.