| Good point about the measuring point. I've got bungs at the front of my hi flow cats, so I'm getting the real AFR. I've seen a lot of dyno charts where the AFR rises some between 6 and 7K RPMs. I never realized it was done intentionally until you said so above. Where is the most important RPM range to have it richest? I've only ever had pinging issues at peak torque and never at higher RPMs as long as the injectors were big enough. Also, all my tuning is being done in the ECU. Almost wish I had an s-afc as I'm getting tired of pulling the ECU and swapping proms. I've only got 8 left before I have to order more.
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