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BMS BMW & VAG JB4 Bluetooth Connect Kit - Unpinned Version (Rev. 3.7)

26 reviews
Regular price £151.68 GBP
Regular price £151.68 GBP Sale price £151.68 GBP
exc. VAT £126.40 GBP
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IThe JB4 Connect Kit (Rev 3.7) allows your Bluetooth 4.0 compatible iOS and Android devices to connect wirelessly to your JB4. View critical engine data in real time, datalog, read codes, change maps, update settings, update firmware, and more, all from the palm of your hand! The REV3 mounts next to the JB4 in the engine bay eliminating the need to run a BMS DATA cable inside the cabin. It's compatible with all JB4 products. Just plug it in to the JB4 where your BMS DATA cable connects, attach the power and ground wire to the JB4 harness using the included connectors, purchase the JB4 Mobile app, and you're off and running. Please note the JB4 Mobile app is available for iPhone®, iOS, or Android® and sold separately via the Apple® or Android® app store on your phone. This adapter is not compatible with the JB4 windows interface.

For the version with the pinned power wire, please see BMS BMW & VAG JB4 Bluetooth Connect Kit - Pinned Power Wire Version (Rev. 3.7) instead. 

Please Note: For use with older JB4 tuners with the square case.


    BMS BMW & VAG JB4 Bluetooth Connect Kit (Rev. 3.6) in car dash - ML Performance UK


    • Connect and control your JB4 tuner wirelessly 
    • iPhone and Android compatible  
    • Monitor your vehicle with a variety of live gauges
    • Take logs to tune your vehicle to perfection
    • Graph/email your logs to review performance
    • Read/Delete error codes
    • Change maps
    • Change user adjustment/methanol settings
    • Update JB4 firmware
    • Custom gauge colors/themes
    • Charge your phone while using JB4 software 
    • Made in USA 


      BMS BMW & VAG JB4 Bluetooth Connect Kit (Rev. 3.6) - Apple Store | ML Performance UKBMS BMW & VAG JB4 Bluetooth Connect Kit (Rev. 3.6) - Google Play | ML Performance UK

       User Guide & Troubleshooting


      Step 1: Identify your board type



      After determining your JB4 board type, select the appropriate install guide from below:

      2b: Unpinned Power Installation (External blue/red wire)




      2c: E series N54 BMW


      It's compatible with all JB1 & JB4 tuning boxes.


      To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number(UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout. 





      Manufactured by

      Burger Motorsports / Burger Tuning (BMS)



      BMS do not offer warranty on this item.

      BMS JB4 Connect Kit (Rev. 3) Demonstration 


      JB4 How to 

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      Customer Reviews
      5.0 Based on 26 Reviews
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      Filter Reviews:
      Gary A.
      United Kingdom United Kingdom

      Jb4 + Bluetooth

      I bought the jb4 +the Bluetooth device it took about 15 mins to fit to my f30 330e I have stage 1 remap, I've tested the jb4 and wow it's an eye opener I can't wait to do some 0-60 runs to see the the times between the maps I've tried maps 1,2,3, its a fantastic product and easy to use with the Bluetooth connection. Thanks to MLPerformance for quick delivery.

      United Kingdom United Kingdom

      B48 JB4 installation.

      I purchased a JB4 for my 2020 BMW M135i xdrive from ML Performance as I'd purchased a similar product for my N55 M135i. Product arrived before the expected delivery date, and even had a free sticker included. Only issue was the recommended installation guide. The guide suggested was for a different model, the old N55 engine, not the B48. I contact BMS direct, and they were unable offer a solution either. Turns out you need the installation instructions for the Mini JCW as it's the same engine. So not really the fault of ML Performance, but worth nothing for future reference. Product is amazing, and has transformed the power delivery of the car. Thanks for the great service.

      Daniel M.
      United Kingdom United Kingdom

      Jb4 Wireless Conect kit

      Fantastic piece of kit, gives your jb4 so much more functionality. Currently running on my Golf R, map 2, miles improved over stock.

      Andrew M.
      United Kingdom United Kingdom

      Fantastic service

      Super fast service cant fault at all Thanks again

      allan r.
      United Kingdom United Kingdom

      JB4 Seat Leon Cupra

      Super fast delivery,easy to order,The JB4 is a great bit of kit car feels way more powerful. would deffo order from ML Performance again.