Group 17 JB4 for VW EA888 Gen4 on MK8 VW GTI

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. Power Gains: Starting at 50bhp and 55ft-lb with UK95Ron, 65hp and 65ft lbs on UK98Ron.

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. A separate JB4 Mobile app purchase is also required.

JB4 Features & Benefits

• Improves 0-60 times and 1/4 mile times
• Power Gains: Starting at 50bhp and 55ft-lb with  UK 95Ron, 65hp and 65ft lbs on UK 98+Ron.
• Preloaded with custom tuning software and up to 8 maps for various fuel and modification levels
• The JB4 offers a lot more performance, functionality, and safety than your average performance chip
• Quick Plug & Play Installation
• CANbus OBDII integration offering unrivaled tuning features and performance
• Improved performance over non-integrated chip tunes
• Runs as smoothly as stock, this is how your vehicle should have come from the factory
• Compatible with all driving modes
• Fuel economy unchanged during normal driving
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• 95 RON octane fuel or better required for performance gains
• Able to read/delete fault codes
• Not VIN locked and can be removed without a trace and resold down the road

Vehicle Fitment

Volkswagen
• 2024-Present VW Atlas
• 2021-Present VW MK8 GTI

Skoda
• 2021-Skoda vRS 180kw/245hp

Audi
• 2021-Present Audi A3 201hp

installation instructional videos:

https://www.youtube.com/watch?v=sRpJARvujuU

https://www.youtube.com/watch?v=JHGTc2tD_rw

https://www.youtube.com/watch?v=8l2WtJOxvkA


Includes:

Billet Aluminium Case .. not plastic one

Bluetooth Wireless JB Connect Kit

JB4 Decal

Installation Instructions


Would cost over £700 new .. 

++Fully tested and all pictures show unit working before advert placed++