You want 11.8-12.0 or less for a FI car. Under WOT that's what I run as does almost every other FI car out there. Why chance it for a few more hp? NA your target should be 12.7-13.0 at WOT!
How about that... someone agrees with me. Thanks I was beginning to think this was a forum of "know-it-alls" and I would have a better chance convincing the TV of a correct A/F ratio for a blown car
You are exactly right about chancing it for a few more horsepower by running it that lean. There's no point in it unless you really just want to blow something up and fix it.
Shannon