My LS i bought off a buddy of mines got about 8 degrees advanced timing. Short ram intake, custom cat back 2" piping, and a univeral Apexi Dunk muffler. Ecu's been tuned to dump more fuel for the extra air and flow.

My question is, what does the advanced timing do? I raced my friends stock LS and I lost (got 17" lensos on there too).... by a lot. I'm thinking that the timings suspect, or the rims. Logically, I'd think that the advanced timing is better for low end torque, but bad for high revs. Should I change the timing?

thanks a lot!!