is it possible to get 300wheel(current goal) with these with the t28 turbo? many people have told me i can get 300wheel at 16psi. haven't put it all back together yet, but i have complete bottom end rebuilt, minor port to the head, 550cc injectors, front mount, tubular turbo manifold and turbo elbow with full 3inch exhaust and afc.

scc got almost 300hp from a setup that is basically what you have only a little less extreme (no head port, smaller injectors, etc)...instead of the stock t28 (t25 in their case), they swapped a gt28r (.62 trim)...

here's the dyno sheet...

http://www.sportcompactcarweb.com/projectcars/0306scc_projsilvia26_z.jpg

ithat depends standard or ball bearing. blitz got 350ps out of there s15 with stock turbo but dont kno how much boost they were runnin