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Wirelessly connect and control your JB4 with your phone or tablet!  The JB4 Connect Kit (Rev 3.7) allows your Bluetooth 4.0 compatible iOS and Andr...

Wirelessly connect and control your JB4 with your phone! For use with older JB4 tuners with the square case.  The JB4 Connect Kit (Rev 3.7) allows...

Burger Motorsports JB4 Tuner suits BMW B38/B46/B48/B58 Power gains of up to 100hp on a stock vehicle without the risks of flashing! The JB4 is the...