Originally posted by Andy
Interesting link. I've heard that the Mugen and Spoon and the other common chipped ECU programs run very rich. You'd have to image they do, considering their designed for cams that can injest a lot more air than your stock cams can, they will need the extra fuel. I never knew about the disabled CEL's or knock sensor though, interesting. Seeya.
Well, in an endurance race they're a lot more concerned about getting to the end than saving the engine... they rebuild the engine after each run, after all.