QUOTE(joker @ Jun 18 2008, 12:05 PM)

Just wondering if anyone knows what AC does to the ecu when they install the race programs.I know they lean them out but what about timing.More at the beginning of the curve,Less at the end or is this a closly gaurded secret.LOL.
Depending on the program,500 feet or 660 .Ive heard 5 degrees advance at the start for 500 grass program.
You can trail port ,pipe ,+2 keyway on a f7 and it wont run with a stock f7 with a hot box on it.
I put clifford chiassons multiple time world series winning f7 box on my f7 and it went from reving 7800 stock box to 8200 with his .It definatly made more power and the hole shot was where you noticed the big gain.Timing