Description
The Burger Motorsports JB4 is an advanced plug-and-play performance tuning system engineered specifically for BMW’s twin-turbocharged N63 family engines, including N63, N63TU, and N63R variants. Designed for maximum performance gains while preserving factory drivability and safety systems, the JB4 delivers substantial horsepower and torque increases without requiring permanent ECU modification.
Unlike traditional flash tunes, the JB4 operates as an intelligent inline tuning module that interfaces directly with factory sensors and CANbus data. This allows real-time control of boost pressure, fuel delivery, and ignition timing while maintaining full reversibility and OEM-level safety monitoring.
Significant Performance Gains
The JB4 delivers dramatic power improvements across stock and modified setups:
- Up to +100 wheel horsepower / +140 lb-ft torque on stock vehicles
- Faster 0–60 acceleration and improved quarter-mile performance
- Stronger mid-range torque and enhanced throttle response
- Optimized power delivery across all driving modes
This makes it one of the most effective performance upgrades for BMW’s high-output V8 twin-turbo platform.
Advanced Tuning Features
The N63 JB4 system includes a full suite of advanced performance and diagnostic tools:
- Multiple adjustable performance maps for different fuel types
- E85 ethanol blend compatibility
- Boost-by-gear traction control for improved launch performance
- CANbus integration for real-time engine data processing
- Fuel and timing control strategies for optimized performance
- Exhaust flap control (supported models)
- Built-in fault code reading and clearing
- Data logging for up to 40 engine parameters
- Water/methanol injection (WMI) support
- In-cabin tuning adjustments and map switching
JB4 PRO Wireless Connectivity
The included JB4 PRO Bluetooth system enables full wireless control via iOS or Android:
- Real-time performance monitoring and logging
- Wireless map selection and tuning adjustments
- Firmware updates with new features and performance maps
- Advanced diagnostic and performance analysis tools
- Compact internal integration within the JB4 enclosure
This provides seamless tuning control without the need for external cables or laptops.
Plug & Play Installation
The JB4 is designed for fast, reversible installation:
- Plug-and-play harness system with OEM-style connectors
- Installs and removes in minutes
- No ECU flashing or permanent modifications required
- Fully removable and transferable between vehicles
- Retains factory driving modes and safety systems
Because it does not overwrite the ECU, the system leaves no permanent trace when removed.
Key Features & Benefits
- Up to 100hp / 140tq wheel gains (stock applications)
- Multiple performance maps and fuel strategies
- Supports E85 ethanol blends
- Full CANbus integration and real-time data logging
- Boost-by-gear traction control
- Fault code reading and clearing capability
- Wireless JB4 PRO smartphone control
- Compatible with flash tunes as a stacking solution
- No VIN locking – fully transferable
- Designed and assembled in the USA
- 5-year manufacturer warranty
Vehicle Applications
- 2011–2016 BMW 5 Series (F10) – 550i / 550i GT (N63 / N63TU)
- 2012–2019 BMW 6 Series (F12) – 650i / Gran Coupe
- 2009–2016 BMW 7 Series (F01) – 750i / 750Li
- 2014–2018 BMW X5 (F15) – xDrive50i
- 2015–2019 BMW X6 (F16) – xDrive50i
- 2018+ BMW X7 (G07) – M50i / 50i
- 2018+ BMW M850i (G15)
Installation
- Plug-and-play installation
- No ECU unlocking or flashing required
- Fully reversible system
- Professional installation optional
