Description
S68 JB4 Tuner for 2023+ BMW XM & 2024+ BMW X5M / X6M
Unlock the full potential of your 4.4L S68-powered BMW XM, X5M, or X6M with the S68 JB4 Tuner. Delivering up to 125whp gains on pump gas and up to 260whp on high-octane fuel or E85 blends, the JB4 transforms your vehicle from factory stock to full performance with unparalleled precision.
This advanced plug-and-play tuner installs easily without splicing or cutting factory wires, making it completely removable and leaving your ECU untouched. With user-adjustable 1st and 2nd gear boost limiting, electronic wastegate control, ethanol fuel support, and full CANbus-based diagnostic tools, the JB4 offers features unmatched by other tuning solutions.
Smartphone Integration & JB4PRO App
The JB4 includes the JB4PRO wireless connection for iOS and Android devices with Bluetooth 4.0. Through the app, you can:
- Record and analyze vehicle performance data.
- Switch between multiple performance maps.
- Update firmware with free future enhancements.
- Utilize advanced logging tools to estimate horsepower and monitor tuning health.
The JB4PRO adapter fits seamlessly inside the enclosure, providing enhanced weather protection and a streamlined appearance.
Features & Benefits
- Gains of 125whp on pump gas, up to 260whp on high-octane/E85
- Improves 0-60 mph acceleration and quarter-mile times
- Multiple fuel and performance maps
- Quick plug-and-play installation, no ECU flash required
- Supports E85 ethanol blends
- Read and clear fault codes, log up to 40 engine parameters
- Boost-by-gear control for improved traction
- Exhaust flap control on supported vehicles
- Full CANbus integration for advanced diagnostics
- Compatible with JB4PRO mobile app
- Smooth operation in all driving modes
- Retains factory fuel economy during normal driving
- No VIN lock; fully removable and transferable
- Durable billet aluminum enclosure
- Designed and assembled in the USA
- 5-year warranty
Vehicle Fitment
BMW X5M (S68 F95) – 2024+ LCI 4.4L
BMW X6M (S68 F96) – 2024+ LCI 4.4L
BMW XM (S68 G09) – 2023+ / 2024+ 4.4L
Why Choose JB4?
The JB4 is a plug-and-play tuning solution that manipulates key vehicle sensors and CANbus data to optimize performance without a traditional ECU flash. Unlike other tuners, JB4 integrates fuel, spark, and boost control with smartphone connectivity, offering real-time diagnostics, map updates, and continuous performance improvements. Non-VIN locked and fully removable, it provides significant, safe, and smooth power gains while retaining all factory safety systems. Trusted worldwide for over a decade, the JB4 remains the gold standard in turbocharged vehicle tuning.
