With my intercooler, I can only get 8 psi. Before that I would hit 12 psi. After turning up the fuel, I can only hit 9psi but it still has more with the IC at 9psi than without at 13psi. Hoping to get a dps or moose soon, hear the moose is better, but I'm still trying to get over the sticker shock.
From what I hear from turbo rebuilders, deleting the waste-gate is quite stupid and hurts the life of the turbo. If you want boost like that, get a bigger turbo.