G80/G81 (2020-present)

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 M2 G87 M3 G80 G81 M4 G82 G83 Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or ...