BMS Stage One Tune for the F8X S55. Excellent condition! Only a few months old. Really wakes the car up! Easy two wire plug and play installation.
http://burgertuning.com/M3_M4_stage_...nce_tuner.html
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2015 BMW F82 M4- Alpine/SO, DCT, AD Suspension- H&R Sports, IND, M Performance, BMS Stage 1/Intake