Originally Posted by BlazeRex
Do you still have the STI TMIC on there? I've never used one on this size of turbo, but it seems to me that could be restricting you some. A 3076 at 22 psi is a lot of air to flow through there.
You should have your gauge reading manifold pressure, not boost pressure after the turbo.
With your setup, with no leaks and a solid BPV, the way I see it, there is either a restriction somewhere or the wastegate sping isn't enough.
Yes I still have the STI TMIC.
Boost gauge is hooked up to a manifold source
Wastegate is hooked up to a boost source