JB4 Group 16: JB4 Tuner for Audi EA888 Gen4 2.0 TFSI 261hp & 265hp 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 unit can be used with our JB4 Bluetooth Connect kit providing for full in-car engine parameter display, map switching, and adjustment. The JB4 is a true user adjustable plug and play performance tuner for all 261hp 4 cylinders from the VAG group.

Power Gains: Starting at 50bhp and 70ft-lb with 91 octane/95Ron with + 4.0psi boost over stock on the default setting with no further mapping. Up to 75bhp and 90ft-lb with bolt-on modifications, higher octane, and boost adjustment with the optional wireless JB4PRO Bluetooth adapter.

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.