Description
Experience the ultimate performance boost with the JB4 tuner for your S63-powered BMW M5, M8, and X Series. Achieve power gains of up to 80 wheel horsepower (whp) on pump gas and up to 150 whp on race gas, all without the risks associated with flashing. The JB4 transforms your stock vehicle into a powerhouse, enhancing your 0-60 times and allowing 1/4 mile potential deep into the 10s.
The JB4 tuner offers full CANbus integration via the OBDII port, providing advanced tuning, safety features, diagnostics, and electronic wastegate control for superior boost targeting. The installation is fully reversible, attaching to the TMAP sensors and OBDII port, with optional electronic wastegate wires for more precise boost targeting on higher maps.
Stay connected and in control with wireless connectivity to Bluetooth 4.0 compatible iOS and Android devices via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Record and analyze vehicle and tuning data, switch performance maps, and update firmware with ease. Note: A separate JB4 Mobile app purchase is required.
JB4 Features & Benefits:
- Power gains of up to 80whp and 100wtq on a stock vehicle
- Enhanced 0-60 and 1/4 mile times
- Preloaded with custom JB4 tuning software and up to 8 maps
- Ethanol (E85) compatible tuning maps
- Real-time monitoring of up to 40 engine parameters
- Boost control by gear for optimal launches
- Compatible with JB4 Mobile for smartphone-based logging and tuning
- Quick and easy Plug & Play installation
- CANbus OBDII integration for advanced tuning features
- Smooth performance as if factory-tuned
- Maintains 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
Vehicle Fitment:
BMW M5
- 2018-Present S63 BMW F90 M5, M5 Competition, and CS
BMW M8
- 2020-Present S63 BMW F92 M8 Coupe and M8 Competition
- 2020-Present S63 BMW F93 M8 Gran Coupe
- 2020-Present S63 BMW F91 M8 Convertible
BMW X Series
- 2020-2023 S63 BMW F95 X5M and X5M Competition
- 2020-2023 S63 BMW F96 X6M and X6M Competition
