Haa well then, if your on a proper race track like I do use the 500R or a GT3582R like I have. We seem to have crazy hp numbers down here for some reason but my car is pulling 600nm and 588rwhp on 20psi with a GT3582R. All custom fabricated bits and bobs.
We use a 130 ramp rate on a dyno dynamics if its any consolation to anyone.
The pic in my avatar is me during a superlap event.
