sidewaysil80: I hit full boost 15psi at around 3600rpm, peak torque at 3800-4000rpm and a huge smile on my face!
Only down side of the GT28RS is lack of top end, thats where the GT2871r shine. However, for the Street and Mountain runs I like to stick to my DISCO! I'm an Alberta/BC guy, the mountains are only 45min drive away.
Steve.