Description
The Burger Tuning S68 JB4 for 2025+ BMW M5 G90 & G99 Touring is the most advanced plug-and-play tuning solution for BMW’s all-new 4.4L twin-turbo V8 S68 engine. Gains start at +93whp on pump gas and climb to +135whp with higher-octane fuel or E85 mixtures, delivering race-ready performance without the need for ECU flashing.
Installation is simple, fully reversible, and requires no cutting or splicing of factory wiring. The JB4 integrates directly with your BMW’s CANbus OBDII system, reading and adjusting more than 40 engine parameters in real-time for optimal boost, timing, and fueling. Built-in safety protocols automatically reduce boost if excessive knock, overheating, or lean conditions are detected.
The JB4 comes preloaded with 8 maps for stock, pump gas, ethanol blends, and race fuel. Advanced features like boost-by-gear control help manage traction, while real-time logging, fault code reading/clearing, and ethanol-compatible tuning maps make this the ultimate choice for S68-powered M5 owners.
Pair it with the JB4 Mobile or JB4PRO wireless adapters for full smartphone integration—allowing you to change maps on the fly, view live data, update firmware, and analyze performance logs directly from your iOS or Android device.
Features & Benefits
- Gains of +93whp on pump gas, up to +135whp with high octane or E85
- Improves 0–60 mph and ¼ mile acceleration times
- 8 preloaded maps for different fuels & modifications
- Ethanol (E85) compatible tuning maps
- View & record 40+ live engine parameters via the JB4 app
- Boost-by-gear control for improved traction & launches
- Read & delete diagnostic fault codes
- Smartphone integration via JB4 Mobile or JB4PRO adapters
- Full CANbus OBDII integration for advanced tuning & safety features
- Quick Plug & Play install – no ECU flash required, compatible with locked ECUs
- Runs as smoothly as factory with improved performance
- Works in all driving modes, including Comfort, Sport, and Track
- Fuel economy unchanged during normal driving
- Not VIN-locked – transferable or resellable
- Rugged billet aluminum enclosure for durability
- Made in the USA – 5-year warranty
Vehicle Fitment
BMW M5
- 2025+ BMW M5 (G90) S68
- 2025+ BMW M5 Touring (G99) S68
What is a JB4?
The JB4 is the industry’s most advanced plug-and-play tuner for turbocharged engines. Installed between engine sensors and the ECU, it optimizes performance by adjusting boost, timing, and fueling in real-time. Unlike basic “boost chips,” the JB4 uses CANbus integration, ethanol fuel support, flex-fuel mapping, and advanced safety features to deliver smooth, reliable power gains.
With free firmware updates, a large support community, and quick removability, the JB4 remains the gold standard in BMW tuning—perfect for S68 M5 owners seeking maximum performance without sacrificing daily drivability.
