GTM Stage 1.5 supercharger build

Originally Posted by snowsurfdirtx

I've got 92 octane here with up to 10% ethanol :/ hopefully I wont need meth on the 92mm pulley. We shall see. Order goes in next Friday when I get paid.. 4 weeks lead time. my FI exhaust should be here then. I'll dyno with both ART pipes and stock cats just to see what the difference is. I'm gonna have a 96mm pulley on for now. Next spring, I'll throw the 92mm on and dyno again. I'm getting a baseline done tomorrow. I have post maf tubes and k&n drop ins, plus the art pipes installed on a stock tune. I'll post results as soon as I can. All in all, 516whp is insane. I'd be MORE than happy with 490whp and no meth.

on a side note.. that dyno graph goes to 7800 rpm. O_o