The JB4 is the most advanced and highly featured tuning system available for your N63 powered vehicle. Power gains are up to 100whp and 140wtq on a stock car.
The JB4 features a simple plug and play installation harness for easy installation & removal and includes many features not found with any other tune. Including on the fly in dash map switching between factory and various performance maps, optional in-dash gauge displays for boost, boost limiting by gear for improved traction in lower gears, progressive water/methanol support, built-in data logging, built-in code reading, optional direct EWG control to prevent throttle closure with exhaust modifications, exhaust flapper control, and much more. Other more expensive tuners may claim to equal the JB4's technology but upon closer examination lack most if not all of the JB4's features.
Remember the JB4 does not require any additional modifications or previous stages. Simply install the JB4 as your first and only modification and enjoy an entirely new fast and smooth racing experience. The JB4 also does not require any user setup or customization but for those who are interested in logging, adding new features as we post them, etc, we suggest the BMS DATA cable or REV3 mobile phone adapter.
JB4 Features and Benefits
Power gains of up to 100hp and 140tq to the wheels on a stock vehicle
Improves 0-60 times and 1/4 mile times
The JB4 offers a lot more performance, functionality, and safety than your average performance chip
Quick Plug & Play Installation
Includes the rugged JB4 billet aluminum enclosure for protection
CANbus OBDII integration offering unrivaled tuning features and performance
Improved performance over non-integrated chip tunes
Runs as smoothly as stock, this is how your vehicle should have come from the factory
Compatible with all driving modes
Fuel economy unchanged during normal driving
Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
91 octane fuel or better required for performance gains
Ethanol (E85) compatible tuning maps
Able to read/delete fault codes
Not VIN locked and can be removed without a trace and resold down the road
Made in the USA
Free USA Shipping
5 year warranty
Note: For off-road racing use only. Not for sale or use in California.
The JB4 is the most advanced and highly featured tuning system available for your N63 powered vehicle. Power gains are up to 100whp and 140wtq on a stock car.
The JB4 features a simple plug and play installation harness for easy installation & removal and includes many features not found with any other tune. Including on the fly in dash map switching between factory and various performance maps, optional in-dash gauge displays for boost, boost limiting by gear for improved traction in lower gears, progressive water/methanol support, built-in data logging, built-in code reading, optional direct EWG control to prevent throttle closure with exhaust modifications, exhaust flapper control, and much more. Other more expensive tuners may claim to equal the JB4's technology but upon closer examination lack most if not all of the JB4's features.
Remember the JB4 does not require any additional modifications or previous stages. Simply install the JB4 as your first and only modification and enjoy an entirely new fast and smooth racing experience. The JB4 also does not require any user setup or customization but for those who are interested in logging, adding new features as we post them, etc, we suggest the BMS DATA cable or REV3 mobile phone adapter.
JB4 Features and Benefits
Power gains of up to 100hp and 140tq to the wheels on a stock vehicle
Improves 0-60 times and 1/4 mile times
The JB4 offers a lot more performance, functionality, and safety than your average performance chip
Quick Plug & Play Installation
Includes the rugged JB4 billet aluminum enclosure for protection
CANbus OBDII integration offering unrivaled tuning features and performance
Improved performance over non-integrated chip tunes
Runs as smoothly as stock, this is how your vehicle should have come from the factory
Compatible with all driving modes
Fuel economy unchanged during normal driving
Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
91 octane fuel or better required for performance gains
Ethanol (E85) compatible tuning maps
Able to read/delete fault codes
Not VIN locked and can be removed without a trace and resold down the road
Made in the USA
Free USA Shipping
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.
Note: For off-road racing use only. Not for sale or use in California.
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
Product Q&A
Lifetime Replacement
This Product Is Covered By Our Lifetime Replacement Program
Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.
If you have any questions, would like to learn more or are ready to place a replacement claim, click here!
Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
Special Fitment Notes
BMW
F01
750i
N63 4.4L
Use vehicle selector to confirm fitment
BMW
F01
750i xDrive
N63 4.4L
Use vehicle selector to confirm fitment
BMW
F01
Alpina B7
N63 4.4L
Use vehicle selector to confirm fitment
BMW
F01
Alpina B7 xDrive
N63 4.4L
Use vehicle selector to confirm fitment
BMW
F02
750Li
N63 4.4L
Use vehicle selector to confirm fitment
BMW
F02
750Li xDrive
N63 4.4L
Use vehicle selector to confirm fitment
BMW
F07
550i
N63 4.4L
Use vehicle selector to confirm fitment
BMW
F07
550i xDrive
N63 4.4L
Use vehicle selector to confirm fitment
BMW
F10
550i
N63 4.4L
Use vehicle selector to confirm fitment
BMW
F10
550i xDrive
N63 4.4L
Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All
warranties, product application, fitment, and performance are the responsibility of Turner Motorsport.
For additional information see the terms of use.
Prop 65 Warning
