JB4 Group 19: JB4 for 2021+ VW TAOS 1.5TSI and 2022+ Jetta 1.5TSI The JB4 is a true user adjustable plug and play performance tuner for all EA888 Gen4 based models in the Audi Group range with electric assist.The JB4 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 JB4 is a true user adjustable plug and play performance tuner.

Power Gains: On 91 expected gains are 35hp and 50ft lb and on 93 45hp and 60ft lbs on a conservative tune. Wirelessly Connect to your JB4: Grab our all-new JB4 PRO smartphone connection to wirelessly connect the JB4 BMW tuner to your Bluetooth 4.0 compatible iOS or Android device.

This option allows 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. Our new adapter fits fully inside the JB4 enclosure for enhanced weather protection and a more streamlined look.

The JB4PRO Free app features an intuitive easy-to-use interface, help buttons, and advanced log analysis tools that can estimate the performance of your car and help identify any tuning concerns.

Vehicle Fitment

Volkswagen
2021+ VW Taos 1.5TSI (North American model only)
2022+ VW Jetta 1.5TSI (North American model only)

The JB4PRO Free app features an intuitive easy-to-use interface, help buttons, and advanced log analysis tools that can estimate the performance of your car and help identify any tuning concerns.

Vehicle Fitment

Volkswagen
2021+ VW Taos 1.5TSI (North American model only)
2022+ VW Jetta 1.5TSI (North American model only)