F Series N55 JB4
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Product Details
Unlock the true motorsport potential of your F-Chassis N55 BMW with the ultimate plug-and-play tuning solution. Engineered for drivers who demand precision, reliability, and measurable power delivery, the JB4 integrates seamlessly into your BMW's factory architecture to maximize performance across all vehicle configurations. On an otherwise factory-stock vehicle, the JB4 extracts up to 60 whp (80 hp crank) of reliable power. For fully prepared race platforms featuring supporting modifications, the system unlocks up to 100 whp (120 hp crank). This performance is delivered via a refined, linear power band that completely transforms the vehicle's acceleration profile without requiring any prior tuning stages.
N55 JB4 Features & Benefits
- Power gains of up to 60hp and 60tq to the wheels on a stock vehicle (80 crank hp)
- Improves 0-60 and quarter mile times.
- Includes multiple tuning maps for different fuel types.
- Quick plug and play installation.
- Supports E85 ethanol blends.
- Reads and deletes fault codes.
- Displays and logs up to 40 engine parameters.
- Boost by gear control for improved traction.
- Controls exhaust flap operation on supported vehicles.
- Compatible with the free JB4PRO app.
- Offers better performance and safety than basic chip tunes.
- Full CANbus integration.
- Runs as smoothly as stock.
- Compatible with all driving modes.
- No impact on fuel economy during normal driving.
- Requires 91 octane or better for performance gains.
- Not VIN locked and fully removable.
- Includes billet aluminum enclosure.
- Designed and assembled in the USA.
- 5-year warranty.
Wirelessly Connect to your JB4: Our all-new JB4 PRO smartphone connection is included 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.
Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.
Prop 65 Warning
- M2 F87 JB4_EWG
