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JB4 Performance Tuner- Back End flash MHD Compatible  BMW B38/B46/B48/B58 JB4 JB4 Performance Tuner- Back End flash MHD Compatible  BMW B38/B46/B48/B58 JB4

Burger Tuning

JB4 Performance Tuner- Back End flash MHD Compatible BMW B38/B46/B48/B58 JB4

$529.00

BMW B38/B46/B48/B58 JB4 $370.30–$423.20 /unit Retail $529.00/unit SELECT QUANTITY Description Power gains of up to 100hp on a stock vehicle without the risks of flashing! The JB4 is the most advanced and highly featured tuning system available...