The pictures are nice but be careful with anything from Troy He won't acknowledge what he doesn't know but continues to argue ad infinitum. It got so bad he was tossed from Speedtalk forum.
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Isn't an idle AFR of 12.5:1 fat to start with?
It depends greatly on the specifics. Considering the OPs combo, its ballpark. See link to AFR-Throttle Position/Load in my earlier post.