BMS JB4 For BMW N63 And N63TU


Power gains of up to 75Kw and 190nm to the wheels on a stock vehicle!



BMS JB4 For BMW N63 And N63TU

Power gains of up to 75Kw and 190nm to the wheels on a stock vehicle

The JB4 adds upon the Stage1 by including CANbus, full data logging, multiple performance maps, user adjustable fuel control, boost by gear settings, WMI support, JB4 Mobile wireless compatibility, and much more.

Compatible both as stand alone tuning systems or in conjunction with performance flash maps where logging, safety, and fine tuning tools are desirable.

Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable.

Both options allow 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. Separate JB4 Mobile app purchase also required.


Check connector type before ordering



Additional information

Select Harness

F Series N63 (Type A), F Series N63 (Type B), F Series N63TU BETA V2 with Integrated BCM, G Series N63TU BETA, E70/E71 N63 (Type A)

JB4 Features and Benefits

• Power gains of up to 75Kw and 190nm to the wheels on a stock vehicle
• Quick Plug & Play Installation
• CANbus integration offering unrivaled tuning features and performance
• Runs as smoothly as stock, this is how your N54 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
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• Not VIN locked, can be removed without a trace and resold down the road
• Made in the USA
• Free USA Shipping
• 5 year warranty


BMW 5 Series
• 2011-2016 F10/F11 550i sDrive/xDrive
• 2010-2016 F07 550i GT sDrive/xDrive
• 2017+ G Series M550 G30 models

BMW 6 Series
• 2012-2019 F12/F13 650i sDrive/xDrive
• 2013-2019 F06 650i Gran Coupe

BMW 7 Series
• 2009-2016 F01/F02 750i/750Li sDrive/xDrive
• 2017+ G12 750i/750Li sDrive/xDrive

BMW 8 Series

• 2018+ G15/G14/G16 M850i xDrive Coupe and Convertible

BMW X Series
• 2014-2018 F15 X5 50i sDrive/xDrive
• 2009-2013 E70 X5 50i sDrive/xDrive
• 2007-2013 E71 X6 50i sDrive/xDrive
• 2019+ G07 X5 50i and M50i





(N63) 2011 550 with JB4, 30% E85


(N63TU) 2016 550 with JB4, 30% E85


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