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JB4 on 2021 M340i
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10-12-2020, 10:45 AM
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Fuel-It!
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Drives: M4, M5, M2C, X4M, 440i, etc...
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Map0 is your factory tuning so you'd do a dragy run on map0 to see what it runs stock, or just pop off the JB4 if you prefer. Takes 5 minutes.
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