Hit up Bend Calibration for the best calibration for your BMW. Mine was all done remotely and the folks at Bend Calibration have been doing this for a long time with great success.
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575RWHP F87 M2C - ECUTEK RACEROM with flex fuel tuning by Bend Calibration 1000+RWHP E46 M3, Lab22 Built Turbo S54, Bend Calibration Tuned - BMW Half Mile Record Holder
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