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Burger Motorsports BMW M3/M4 S58 JB4 Tuner (G80/G81/G82/G83) F87 order yours todayThe ultimate tune for your S58 powered G80 M3 and G82 M4, the JB4 allows you to go from factory stock to full race, and everywhere in between. The JB4 installs and removes easily and includes many unique features not found in any other tune including user adjustable 1st and 2nd gear boost limiting, smartphone integration, electronic wastegate control, ethanol fuel support, and built in advanced CANbus based diagnostic tools. Installation is easy and
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