I don't post that much on here but I'm having a problem with my car and was hoping someone local would know what's going on.

This is my dilemma, I got my car chipped GIAC and when I first got it the boost would spike to 21 psi than settle at 15-16 psi, which was awesome. This was with the stock DV, well like expected the DV started going out and for about a month I drove it and it would only hit about 10-13 psi. So I just got a Forge 007 today, installed it and test drove it. So the turbo kicks in a lot stronger and holds longer which it should now but I'm only hitting 10 psi no matter what I do. I don't understand what could be wrong now. I even switched the green spring for the yellow thinking that might solve it but it still stays at 10 psi. The only thing I can think of is I just got a CEL a couple of days ago and it was the rear O2 sensor, could the car be in limp mode b/c of the CEL??? I ordered a new sensor so I plan on installing that asap.

Oh yeah I'm running the stock N75 valve too. Any help would be greatly appreciated.