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BMS VAG 1.8 & 2.0 TSI JB4

BMS VAG Audi, Porsche & VW Group 1-6 JB4 Tuning Box (1.8 & 2.0 TSI VW MK7 GOLF GTI/R, Audi TT/TTS/S3, Macan & Seat Leon)


  • £379.00
    exc. VAT £315.83
  • 6

In Stock

You may also wish to add the Data Cable or the Bluetooth Connect Kit for additional features.



The VW Group 1-6 JB4 is a true user adjustable plug and play solution for all MQB based models in the VW Audi Group range. Power Gains: Starting at 45bhp and 45ft lb with 91 octane/95Ron with + 4.50psi boost over stock on the default setting. Up to 100bhp and 70ft-lb with bolt on modifications, higher octane and boost adjustment with the optional BMS Data Cable.

The JB4 BETA features CANbus connectivity for more advanced tuning, direct AFR control, advanced safety systems for boost, air/fuel ratio, fuel trims, and engine knock, boost mapping by gear for improved traction, integrated water/meth control, and much more.

The unit can be used with the BMS Bluetooth Connect kit providing for full in car engine parameter display, map switching and adjustment The JB4 Beta can also be stacked over a flash tuning allowing for fine tuning as well as meth control with safety measures in place and full logging. This is highly recommended.

This product covers group 1-6 of VW JB4 products. All units comes with an optional custom map 6 setup, simply drop us an email with your vehicle details and we will assist you with setting this up. 


Compatibility Check

To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this using your registration number(UK), simply enter your car details prior to checkout. 



• Audi S3 8V
• Audi S3 Facelift
• Audi TTS 8S
• VW MK7 Golf R
• VW GTI Clubsport ED40
• VW MK7.5 Golf R
• VW Aerton 2.0T 280hp
• B8 Passat 2.0T 280hp
• Seat MK3 Leon Cupra
• Seat Ateca Cupra 
• Skoda Superb 280

• VW MK7 Golf GTI and GTI Performance Pack
• VW MK7.5 GTI & 245hp PP
• VW MK7.5 GTI TCR 2019
• VW Tiguan II 2.0TSI 220hp/162kw (Non-US models only)

• Audi A3 8V 2.0T
• Audi TT 8S

• Skoda Octavia RS and 245HP
• Skoda Superb 2.0T

• VW Polo 6C GTI
• Audi A3 8V 1.8T FSI
• Audi A1 1.8TFSI
• Skoda Octavia 1.8T FSI
• Seat Leon SC FR 1.8TSI
• Seat Leon FR 2.0 TSI
• Seat Ibiza Cupra 1.8TSI

• Audi B9 A4 2.0TFSI 252hp
• Audi B9 A4 2.0T Allroad
• Audi B9 A5 2.0T TFSI 252hp
• Audi B8.5 A5 2.0T TFSI 220hp 
• Audi A6 2.0T TFSI 252hp
• Audi Q7 2.0T TFSI 252hp
• Audi Q5 2.0T 252hp*
• Porsche Macan 2.0T 252hp*

Also fits facelift models.


*Q5 and Macan need a small settings change. The Future Use D value needs to be set to 1 before installing the JB4, please contact us if you require this change prior to dispatch of your JB4.


BMS VAG JB4 1.8 & 2.0 TSI VW MK7 GOLF GTI, Audi TT, Seat Leon | ML Performance UK

 You can find the map information and further info on settings on N54Tech


Free Next Day UK Delivery

FREE UK next day delivery if ordered before 11am! We can also ship worldwide, simply contact us for a quote.



5 Year BMS Repair warranty


Manufactured by

Burger Motorsports


Part Number




26 x 16 x 6 cm



0.7 Kg

Customer Reviews

5 Based on 6 Reviews
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Steve C

beginner tuning experience

ML Performance have impressed me. There response and help has been first class which is always a worry when buying at distance, but I needn't have worried. The JB4 is wonderful and the support from BMS is also amazing. I did take a long time getting the OBD and Data cable through the firewall (as i'm not the smallest person in the world), but once you realise you need to cut it rather than just poke a little hole in the ****** all is easy. Previously had a Stage2 APR on a EA888 gen2, and the JB4 on the gen3 brings the torque back making it a significant upgrade. The USP of the JB4 is its ability to use live data from the OBD and also allow us the users to log and tweak the tune on map6. Every engine responds differently so other tuning boxes would either need to compromise or risk the engine, with the JB4 you can log and see what is happening.

Dan Isaksson

Great product

The JB4 is a great kit. I had done some research how to install it and managed to install it in about 1-2 hours. I would recommend removing the battery to help when passing the ODB cable through the firewall. The JB4 is really cool in combination with the bluetooth dongle to get all the reading and logging in your phone. The support from ML performance was great, would recommend them to anyone. Many thanks Dan

A ML Performance Customer
David F.
United Kingdom

Very impressive product

Trickier to fit than some forums make out, I’d allow a couple of hours! Once fitted the JB4 works very well, you do need the app (around £25) if you went for the Bluetooth module but it allows you to set custom maps easily. I was surprised how easy it connects to your phone, no messing about - it just works! Service form ML Performance and Burger Motorsport was 10/10. You get a custom map from Burger by sending them logs and I was very impressed with the turnaround time. Thank

David F. verified customer review of BMS VAG Audi, Porsche & VW Group 1-6 JB4 Tuning Box 1.8 & 2.0 TSI VW MK7 GOLF GTI/R, Audi TT/TTS/S3, Macan & Seat Leon)
Hassan L.
United Kingdom

Great customer service and product!

Top customer service from the team at ML performance. Highly recommeded and a pleasure to be doing business with. The JB4 itself is also quite impressive ;)



Top service. Really quick to respond to questions and exceedingly quick delivery. Couldn't be happier with MLPerfomance.