[Richard L]

Jack,

Thanks for submitting your SRT for the discussion - hope it will bear fruit as more people may chime in and offer solution to get over some of ways to over come the rich a/f ratio being programmed at HOM. Does the HOM also runs rich?

The piggyback is one solution - not sure how it works to trim fuel etc. The most common method is to trim the MAF, TPS or MAP sensors. They will all have other side effects at WOT, since the ECU is not going to see full WOT voltage etc. Please outline your thoughts and how WI can replace the 10:1 afr.