Description
Unlock the full potential of your S58 powered BMW with the JB4 Tuner. Experience gains of up to 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures. This advanced tuner seamlessly transitions your vehicle from factory stock to full race mode and everywhere in between.
The JB4 installs and removes easily without any splicing or cutting of factory wires. Unique features include user-adjustable 1st and 2nd gear boost limiting, electronic wastegate control, smartphone integration, ethanol fuel support, and built-in advanced CANbus-based diagnostic tools.
Stay updated with the latest performance results, firmware, and map guides by visiting JB4 Tech Forum.
Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android devices via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options enable recording and analysis of vehicle and tuning data, changing JB4 performance maps, and updating JB4 firmware. Note: A separate JB4 Mobile app purchase is required.
JB4 Features & Benefits:
- Gains of 80whp/100wtq on pump gas and up to 150whp/175wtq on higher octane or E85 mixtures
- Improved 0-60 times and 1/4 mile times
- Preloaded with custom JB4 tuning software and up to 8 maps for various fuel and modification levels
- Ethanol (E85) compatible tuning maps
- Ability to read/delete fault codes
- Real-time monitoring of up to 40 engine parameters with the JB4 app
- Boost by gear in 1st, 2nd, and 3rd controlled via the JB4 app for optimal launches
- Compatible with JB4 Mobile for smartphone-based logging and tuning
- Superior performance, functionality, and safety compared to average performance chips
- Quick and easy Plug & Play installation
- CANbus OBDII integration for advanced tuning features
- Improved performance over non-integrated chip tunes
- Smooth operation, as if factory-tuned
- Compatible with all driving modes
- Unchanged fuel economy during normal driving
- 91 octane fuel or better required for performance gains
- Not VIN locked – removable and resellable
- Rugged JB4 billet aluminum enclosure for durability
- Made in the USA with a 5-year warranty and free USA shipping
S58 JB4 Vehicle Fitment:
BMW X3M
- 2020-Present S58 F97 BMW X3M
- 2020-Present S58 F97 BMW X3M Competition
BMW X4M
- 2020-Present S58 F98 BMW X4M
- 2020-Present S58 F98 BMW X4M Competition
