Power gains of up to 100hp and 140tq to the wheels on a stock vehicle
The JB4 Tuner includes 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 >>CLICK HERE<<
JB4 Features & 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
• Preloaded with custom JB4 BMW tuning software and up to 8 maps for various fuel and modification levels
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• View and record up to 40 different gauges/engine parameters in real-time with the JB4 app.
• Boost by gear in 1st, 2nd, and 3rd can be controlled via the JB4 app for a perfect launch
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• The JB4 offers a lot more performance, functionality, and safety than your average performance chip
• Quick Plug & Play Installation
• 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
• 91 octane fuel or better required for performance gains
• Not VIN locked and can be removed without a trace and resold down the road
• Includes the rugged JB4 billet aluminum enclosure for protection
• 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 550/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
• 2015-2019 F16 X6 50i sDrive/xDrive
• 2009-2013 E70 X5 50i sDrive/xDrive
• 2007-2013 E71 X6 50i sDrive/xDrive
• 2019+ G05 X5 50i/xDrive and M50i/xDrive
• 2020+ G06 X6 50i/xDrive and M60i/xDrive
• 2019+ G07 X7 50i/xDrive, M50i/xDrive, and Alpina XB7
If your BMW has the N63/N63R/N63TU engine and it’s not shown on the list above please email email@example.com to verify JB4 fitment.
What is a JB4?
The JB4 is a plug & play tune available for turbocharged vehicles. The JB4 tuner installs between your car’s sensors and its DME/ECU (computer) and manipulates vehicle performance through these connections making your vehicle much faster. While it’s not the only tuning system that operates this way the JB4 separates itself from the competition with much more advanced connection points and processing including CANbus, fuel & spark control, Bluetooth to your smartphone, and a variety of innovative and advanced features not possible with any other system. BMS regularly publishes free mapping and firmware updates adding performance and features as ongoing development allows. In addition, the JB4 system is not VIN-locked to your vehicle and can quickly be removed and swapped between cars or resold at a later time. Often imitated but never duplicated the JB4 has been the gold standard in plug and play turbocharged performance tuning for over a decade.
(N63) 2011 550 with JB4, 30% E85
(N63TU) 2016 550 with JB4, 30% E85
We’ve got your back!
German Muscle takes “customer service” very personally. We understand that finding the right parts can be overwhelming. Education and awareness are the principles that keep us ahead of the curve. Let us make this experience simple, easy, and awesome, so without hesitation give us a call at (480) 569-3402, feel free to direct message on our live chat, or email us at firstname.lastname@example.org.
Make sure to follow us on Instagram: @GermanMuscleAZ
Chester Martin (verified owner) –
This product is the truth, ooooooooo yes it is.