Im building a high compression turbo motor, and Im wondering what I should use for a turbo. I just won a straight T4 w/.50 comp AR and 1.15 turbine AR. I was thinking because Im running 10.5:1 comp, that it would overcome the extreme hot side AR. My goal is to hit 20psi, should the T4 get me there under 7000rpm? This has to be semi-streetable, ie, driven to the track. If not, I think I won a t3/t4 out of a 911...
Thanx