I've noticed that I haven't been able to hit full boost 20-21 psi, instead I'm topping out around 17-18 psi. I have a catch can in place of the PCV system so that couldn't be it and I've replaced my N80, fuel filter, and cam follower to see if these would help. My DV was replaced around 50k miles ago with revision G, could it have broken again? Any other thoughts on what the issue could be would be helpful.