Description
Experience unparalleled performance gains with the JB4 tune for your 4.4L S68 powered BMW XM, X5M, and X6M. Achieve up to 125whp on pump gas and a staggering 260whp with higher octane or E85 mixtures. The JB4 transforms your vehicle from factory stock to full race mode effortlessly, offering features you won’t find in any other tune. Enjoy user-adjustable 1st and 2nd gear boost limiting, seamless smartphone integration, precise electronic wastegate control, ethanol fuel support, and advanced CANbus-based diagnostic tools. Installation is straightforward and fully reversible, ensuring no cutting or splicing of factory wires, making the JB4 the ideal choice for enhancing your S68 engine.
Stay updated with the latest S68 performance results, firmware, and map guides by visiting JB4Tech.
Effortlessly connect the S68 JB4 to your Bluetooth 4.0 compatible iOS or Android® device using the JB4 Mobile connect kit, or link to your Windows® laptop with the BMS data cable. These options enable you to record and analyze vehicle and tuning data, modify JB4 performance maps, and update firmware with newer versions, featuring more powerful maps and additional features. Note: A separate JB4 Mobile app purchase is required.
S68 ///M JB4 FEATURES & BENEFITS
- Significant Power Gains: Achieve up to 125whp on pump gas and up to 260whp with higher octane or E85 mixtures.
- Enhanced Performance: Improve your vehicle's 0-60 times and quarter-mile times.
- Custom Tuning: Comes preloaded with exclusive S68 ///M JB4 tuning software and up to 8 maps for various fuel and modification levels.
- Ethanol Compatibility: Includes tuning maps compatible with E85 fuel.
- Diagnostics: Read and delete fault codes easily.
- Real-Time Monitoring: View and record up to 40 engine parameters with the JB4 app.
- Boost Control: Manage boost by gear in 1st, 2nd, and 3rd for optimal launch using the JB4 app.
- Mobile Compatibility: Use JB4 Mobile for smartphone logging, tuning adjustments, and more.
- Superior Performance: Offers more power, functionality, and safety compared to average performance chips.
- Easy Installation: Quick and simple Plug & Play setup.
- Advanced Integration: CANbus OBDII integration for unmatched tuning features and performance.
- Seamless Operation: Maintains smooth operation, akin to factory settings.
- Driving Modes Compatibility: Works with all driving modes.
- Fuel Efficiency: Maintains fuel economy during normal driving.
- High Octane Requirement: Requires 91 octane fuel or better for performance gains.
- Flexible: Not VIN locked; can be removed without a trace and resold.
- Durable Build: Includes a rugged JB4 billet aluminum enclosure.
- Made in the USA: Quality construction with free shipping within the USA and a 5-year warranty.
Vehicle Fitment
- BMW X5M: 2024-Present S68 F95 BMW X5M LCI 4.4L
- BMW X6M: 2024-Present S68 F96 BMW X6M LCI 4.4L
- BMW XM: 2023-Present S68 G09 BMW XM 4.4L
What is a JB4?
The JB4 is a plug & play tuner designed for turbocharged vehicles. It installs between your car's sensors and its DME/ECU, manipulating performance to significantly increase speed. The JB4 stands out due to its advanced connections and processing capabilities, including CANbus integration, fuel and spark control, Bluetooth connectivity, and a host of innovative features unique to this system. BMS provides ongoing free mapping and firmware updates to continually enhance performance. Not VIN-locked, the JB4 can be easily removed, transferred between vehicles, or resold. For over a decade, the JB4 has been the gold standard in plug & play turbocharged performance tuning. If you're seeking an S68 tune for your BMW XM, X5M, or X6M, the JB4 is the ultimate choice for boosting your S68 engine’s performance.
