X3M

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...

Rugged, Fortified JB4 Protection Our most protective case in the JB4 line-up. The sleek, stylish JB4 billet aluminum enclosure withstands drops, sh...

Burger Motorsports JB4 Tuner suits BMW X3M F97 X4M F98 Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures....