re-rx7, IIRC the OP was using a SCT tune so it was not a custom tune. Was the AFR actually lean or was the tailpipe sniffer (which reads a little lean to begin with due to the distance away from the head) using a sensor that hadn't been calibrated for the fuel being used {14.08 instead of 14.64} or hadn't been changed recently since they degrade quickly when using mixed fuels?
Not saying TSM was wrong and GH is right.
What if GH is right and TSM is wrong? Then the red flag I see is that the OP ended up calling TSMs bluff on needing other services to fix his problem that was nonexistent by taking it elsewhere.
What if TSM is right and GH is wrong? Then the OP may be in trouble.
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2010 GT500
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