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  1. HELP...P0420, P0430, P2195, P2197 code group. Surging and fluctuating afr gauge

    Ok, so I have a 2019 Mustang GT Perf PK 1, 10SPD AUTO GT. Have longtubes, full exhaust, Roush CAI, Lund e85, 91-93 octane, and 91-93 octane ghost cam tunes. Just turned 26,600 miles. Haven't run E85 through it in a few months now. Been just running 93. Car ran fine last Wednesday when i drove...


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