I had the car over at Mastro to finally install the hoses it was missing and read the right boost. I have a question though. The car is boosting ~15psi, however, it seems as if the power is not linear. It seems to starve for fuel and then kick back in. There are other times that I go WOT, and I feel as if I'm not going anywhere... I hear the turbo spool louder, but nothing. No "umph" when I go WOT. Then I found out the boost gauge hose connector nipple was broken. I fixed that part, however, its still giving me hesitations.

What do you guys think its happening?

Another observation was I would go WOT from low RPM, I see the boost gauge go to 11psi and after a higher rpm, it kicks to 15. Is this normal? The car feels numb to me.