320-340 RWHP in stockish trim which would be about the same in torque. That's probably about 12-13 psi After all the bugs are worked out I'd consider heading for 18-19 psi but the JDM, (Japanese Domestic Market) CT20 turbos don't love being pushed outside their efficiency island for long life. It's so hard build everything on a car and trying to think about big power until you know if it's going to all work properly. I still lose sleep over driveline angles! ;)