The M90 should retain 10psi up to about 14000 rpm. I'm spinning it about 11000 max.
Originally Posted by dyezak
Well, that's assuming the current S/C can hold 10psi to redline. From what I have read he hasn't been able to do that yet due to fuel cut. We'll see but I think 300-310whp is a good bet of where he will be (again, as long as the S/C doesn't fall flat in the upper RPM's).