Originally Posted by
Chip
I find it a bit scarey seeing people quote AFRs to map to which they think apply to ALL engines.
IME different engines work better at different AFR's, and if im in any doubt i'd sooner be the rich side of just right than the lean side.
My first pass through on mapping a car will always be a footballer map.
I fully agree hence why any afrs iv quoted have followed by for example...
And yes right up in the rev range and on full boost i will always leave a little extra fuel in there and as youve said some engines do prefer to run richer than others and vice versa..
cheers danny