Car flutters/bucks/stutters at 12 psi...

[Cool Mr Steve]

Help me... In any gear, when I hit about 12 psi my car starts to shudder like its starving for fuel or something. Like its trying to pull, but then starts pulling again, then stops pulling, then starts, but really quickly. Sorry about the odd description, but I really cant describe it any better. I have a HKS SSQV, and its adjust screw is almost all the way out, but it has been that way for awhile and hasn't caused any problems, and I don't know if that would cause any kind of leak anyway. Could it be the wastegate??? Please help...

 

[gsxboostin]

Ok, check for bost leaks EVERYWHERE, also inspect you sprak plugs And wires. I would recomend just replacing them, my friends 2g GS-T had the same problems as you, and he replaced his plugs and put some high performance wires on and it fixed it. Let me know. -Matt