JB4PRO app without a JB4! 

This unique OBDII tool allows flashed and factory-tuned BMW vehicles to use the free JB4PRO app for vehicle logging, advanced diagnostics, performance metrics, code read/delete, and much more! It also includes a convenient LED gauge which can be used to display engine information including boost pressure, ignition advance, fuel pressure, fuel trims, and more!  

The JB4PRO app provides a variety of industry leading features including auto-logging in the background so you never miss the action! It checks your tuning data when viewing logs including confirming boost levels, AFR levels, fuel trims, fuel pressure, and more, are within safe parameters. In addition the JB4PRO app will estimate your 0-60mph, 40-90mph, 60-130mph, 1/8th mile, and 1/4 mile metrics allowing you to confirm your vehicle is operating at peak performance. 

Also includes CANflap (for 3 and 4 series models), allowing exhaust flapper control via the turn signal button or JB4PRO app! 

Installation is as quick as plugging CANtool into your OBDII port under the dash! It can then be routed under the seat for invisible operation, or routed to the center console if you want to use the LED gauge feature. The system automatically turns on and off with the ignition system and won't drain your battery while attached!

Includes free firmware updates as we add new app and logging features! 

Optional CANflap operation:

Full data logging capabilities of over 40 parameters, including estimated 0-60mph, 40-90mph, 60-130mph, 1/8th mile, and 1/4 mile metrics. 

 

Vehicle Fitment

Most BMW F and G Chassis Models

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