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BMS Audi & VAG JB1 STAGE 1 FOR VAG 1.8 AND 2.0 TSI (MK7 Golf, A3, S1 & S3) ML Performance UK

BMS Audi Group 7 JB4 SENT BETA (B9 S4, S5, SQ5, RS4 & RS5)


  • £529.00
    exc. VAT £440.83

True Plug & Play Tuning


JB4 Group 7: 

This easy to install plug and play tuner attaches to sensors in the engine bay and works with your factory ECU tuning to remap boost, timing, and fueling for optimal performance and reduced turbo lag. Includes full SENT sensor technology required for properly tuning the latest Audi platforms. Includes full CANbus allowing the JB4 to access and incorporate all engine data in it's tuning strategies, incorporate unique safety features such as keeping boost pressure low until oil and water is up to temperature to provide proper engine and turbo lubrication, and drop to a low boost map if the engine starts to over heat, run lean, excessively knock, or over boost. Includes fuel control for ethanol mixture mapping. Fully compatible with JB4 mobile for on the fly map changes, data logging, firmware updates, and much more.






The simple plug and play installation is very discrete and it quickly removes without a trace when needed.



Customer provided Audi B9 S4 race video showing JB4 in action



  • Audi B9 S4 3.0TFSI
  • Audi B9 S5 3.0TFSI
  • Audi B9 SQ5 3.0TFSI
  • Audi B9 RS5
  • Audi B9 RS4


Optional JB4 Wireless Mobile Connect Kit or BMS Data Cable
Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options allow you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more powerful maps, and new features under development.


Free Next Day UK Delivery

FREE UK next day delivery on stock items if ordered before 11am! We can also ship worldwide, simply enter your full address during checkout for a shipping quote.


5 year warranty.


Manufactured by

Burger Motorsports / Burger Tuning (BMS)


Part Number




25 x 16 x 6cm



0.6 Kg

Customer Reviews

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