Description
Take your Volkswagen Gen3 turbocharged vehicle to the next level with the JB4 VW Performance Tuner (Group 4). This user-adjustable, plug-and-play tuner delivers power gains starting at 55bhp and 60ft-lb on 91 octane fuel, with +4 psi boost over stock, and can reach up to 80bhp and 80ft-lb with bolt-on modifications, higher octane fuel, and boost adjustments via the optional JB4PRO wireless connection.
Designed for Gen3 VW Jetta GLI, Beetle 1.8T, 2.0T, and Passat 1.8T, the JB4 provides safe, reliable, and fully reversible tuning with advanced CANbus integration. Direct AFR control, boost mapping by gear, integrated water/methanol control, and expanded engine safety systems ensure smooth, responsive performance under all driving conditions.
Wireless JB4PRO App Integration
The JB4 includes the JB4PRO smartphone adapter, allowing you to wirelessly connect to any iOS or Android device with Bluetooth 4.0. The app enables:
- Real-time engine parameter monitoring and logging
- Map selection and adjustment
- Firmware updates with free future releases
- Performance estimation and diagnostic analysis
The adapter fits completely inside the JB4 enclosure for enhanced weather protection and a streamlined appearance, providing a clean, professional installation.
Features & Benefits
- Power gains starting at 55bhp and 60ft-lb, up to 80bhp/80ft-lb with upgrades
- Improves 0-60 mph acceleration and quarter-mile performance
- Multiple performance maps for different fuels including E85
- Quick plug-and-play installation, fully reversible
- Boost-by-gear control for improved traction
- Integrated water/methanol control for enhanced tuning safety
- Read and clear fault codes, log up to 40 engine parameters
- Controls exhaust flap operation on supported vehicles
- Full CANbus integration for smoother operation and advanced diagnostics
- Runs as smoothly as stock in all driving modes
- No impact on fuel economy during normal driving
- Non-VIN locked and fully removable
- Durable billet aluminum enclosure
- Designed and assembled in the USA
- 5-year warranty
Vehicle Fitment
Volkswagen Gen3 Vehicles:
- 2013.5–2018 Jetta MK6 GLI
- 2013–2020 Beetle 2.0T
- 2014–2020 Beetle 1.8T
- 2014–2019 Jetta 1.8T 170hp
- 2014–2019 Passat 1.8T 170hp
For VW-specific sales, support, or technical questions, contact George at george@burgertuning.com, the dedicated BMS representative for VW platforms.
Why Choose JB4?
The JB4 is a true plug-and-play tuning solution for turbocharged Volkswagens, manipulating key engine sensors and CANbus signals to optimize boost, timing, and fuel delivery. Unlike flash-only ECU tunes, the JB4 is non-VIN locked, fully removable, and leaves all factory safety systems intact. With over a decade of refinement and proven worldwide in 67+ countries, the JB4 remains the gold standard for turbocharged vehicle tuning.
