I raced a r6 the other day for about 35 to 140+ spun 2nd and some of 3rd i started to pull a little in 5th gear but ran out of road. He beat me by about a little more then 1 car. I have sp500 turbos at 15 psi on a fully built motor and na rear end. how fast are they? I think i can brt him at 18-20 psi with race gas.=) because he said i can't what do you guys think.