i have a pro tuned utec with stage 4 bolt ons, it was tuned at 18 psi (i have a big 16g turbo). at 18psi or higher it cuts out at around 6000 rpm, any thing below 18psi is just fine. ive already been throuh all the utec stuff with the fuel cut settings and launch control. im freaking flipping out because the margine for the problem is so small, revs to redline at 17.5psi, cuts at 6000 rpm at 18 psi. someone please give me guidence !Cry!