Access your BMWs DME wirelessly by connecting to your phone!
Access your BMWs DME wirelessly by connecting to your phone!
Enables precise control of aftermarket performance components like fuel pumps, meth injection kits, boost controllers, port injection kits
Wirelessly connect your JB4 to your phone!
For JB4 systems produced 2017 and later. Please check board diagrams to properly identify your JB4 before ordering.
The ultimate OBD adapter designed to deliver exceptional speed, maximum connection stability, and great performance for flashing, coding, and live monitoring
Unlock additional power and performance with the JB4 tuner
Remove the dead area from your throttle pedal.
Quick and simple add-on for increased power!
Take your Inline-4 BMW to The Next Level With this all in one Tuning Solution!
Quick and reliable power from a name you know and trust!
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This product was last offered at the strikethrough price on
07-31-2026
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
Version 1.
A piggy back tuner that allows you to adjust throttle response for peak performance.
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash. Includes JB4 side repair harness molex pigtail.
Unlocks your factory DME to allow tuning
For vehicles with a production date before 06/2020
Upgrade From Your Outdated Batch-Fire Injector Controller!