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cortex average mpg
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  1. PCM Tuning / Dyno Results
    I decided to compare MPG averages with the different octane tunes (91&93), and thought I would start a thread to get comparison numbers from everyone else. Please also include if you have AFM engaged or off, as mine is off. I tested for at least a week, maybe 2 with the 91....now I'm back to...
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