I lined up at a light on Saturday night and a red MR2 turbo starts revving on me and letting me hear his BOV. I asked him what he had and he said MBC @ 16psi, exhaust, intake, BOV etc... I said I was pretty much stock, just catback and MBC @ 15psi. When the light turned I did a nice solid 5K launch and instantly pulled like 4 cars on him. By the middle of third he was so far back I just decided to shut down and call it quits. Poor guy never knew what hit him!! Stage IV rocks, esp with a VF22. I'm still tuning my UTEC, and am only running 16psi right now. With a lil more time and 18psi, I'm gonna hit the track and hope for some 12's finally!