JB4 Tuner (EA888 Gen 4)

The Burger Motorsports JB4 Tuner is a sophisticated plug-and-play performance enhancement for the EA888 Gen 4 2.0T MQB Evo engine. Specifically engineered for the 2022 and later Audi S3 (8Y chassis) and the 2022 and later Volkswagen Golf R (MK8 and MK8.5 chassis), this tuner offers a significant performance upgrade without altering the factory ECU tune. It seamlessly integrates between existing sensors and the DME, allowing for precise adjustments to boost pressure, ignition timing, and fuel delivery. This advanced tuning system provides up to 8 user-selectable maps, catering to different fuel grades (91/95 RON and 93/98 RON) and transmission configurations (manual and DSG). The JB4 features full CANbus and OBDII integration, enabling real-time monitoring and logging of up to 40 engine parameters. Its integrated safety strategy actively protects the engine by managing boost levels based on oil and coolant temperatures, and by reducing boost if overheating, excessive knock, or overboost conditions are detected. The unit also includes boost-by-gear control to optimize traction off the line and allows for reading and clearing fault codes. Built with a durable billet aluminum enclosure and proudly assembled in the USA, the JB4 comes complete with a plug-and-play wiring harness specific to the MK8 R and 8Y S3. It also includes the JB4PRO Bluetooth adapter and app, allowing for on-the-fly map changes, live data viewing, and firmware updates directly from a smartphone. The tuner is not VIN locked and can be removed cleanly, making it transferable between compatible vehicles or removable before a lease return or sale. Burger Motorsports publishes gains of up to 75hp on a stock vehicle, with a peak calibration reaching 370bhp and 380 ft-lb, representing the strongest published gains for the MQB Evo JB4 lineup. To achieve these published gains, 91 octane fuel or higher is required. The JB4 remains on the last selected map and settings, minimizing the need for constant interaction, though a spare JB4PRO adapter is available separately.