S68 JB4 Tuner for 2025+ G90 G99 BMW M5

Price

Pricing

EUR 937

USD 1,080 · UAH 49,682

Gains are 93WHP on pump gas and up to 135WHP on higher octane or E85 mixtures. The ultimate tune for your 4.4L S68 powered G90 G99 BMW M5. The JB4 allows you to go from factory stock to full race and everywhere in between.

The JB4 installs and removes easily and includes many unique features not found in any other tune, including user-adjustable 1st and 2nd gear boost limiting, smartphone integration, electronic wastegate control, ethanol fuel support, and built-in advanced CANbus-based diagnostic tools. Installation is easy and completely removable with no splicing or cutting of factory wires making the JB4 an excellent choice for your G90 G99 S68 engine.No ECU flash needed and compatible with locked ECUsFor the latest S68 performance results, updates, firmware, and map guide, be sure to visit https://www.jb4tech.com/forum/model-specific-engine-tuning-modification-discussion/m/822883-jb4-for-new-bmw-s68-hybrid-dyno-testing#post822883 Wirelessly Connect to your JB4: Grab our all-new JB4 PRO smartphone connection to wirelessly connect the JB4 tuner to your Bluetooth 4.0 compatible iOS or Android device.

This option allows you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more powerful maps, and new features under development. Our new adapter fits fully inside the JB4 enclosure for enhanced weather protection and a more streamlined look.

The JB4PRO Free app features an intuitive easy-to-use interface, help buttons, and advanced log analysis tools that can estimate the performance of your car and help identify any tuning concerns. S68 G9x M5