i have a 96 gst and i wonted to know if thows manual boost controllers are any good i just got on for free and i also wonted to know what is the highits psi i can run on my stock gst,all i have done is i took out the cat
and muffler and just put a tip on it,and i have a stage 3 ACT clutch so what the highits psi i can run with out fucking up the car?