Whats up guys, this is my first post and I just wanted to get some info about tuning Y2K's contour. Ive got a A/F meter that uses a wideband sensor for tuning my sonoma and I want to run it on the contour to see exactly what its doing. My question to you guys is what kind of A/F ratios should we be getting for max power. On my sonoma I try to get it as close to 12.6 as I can all the way up to 5 grand. Im going to run it on the autotap as well to make sure all the O2 sensors are working and something else wierd isnt going on.

Thanks for the help guys.

1997 GMC Sonoma 4.3 5 speed, 10psi Intercooled ATI Procharger, 3" Spintech exhaust, Went 13.6 at 105 mph.