s63tu JB4 Tuner for BMW M5/M6/X5M/X6M w/ OBDII & Integrated BCM

Ready to take your S63TU powered BMW to the next level? Our latest kit for the S63TU M5/M6/X5M/X6M, the new JB4 includes functions never before available to the platform, including on-the-fly map switching, boost limiting in lower gears for improved traction, an in-dash boost gauge, full CANbus data logging, code read/delete, integrated water/methanol tuning with progressive safety systems, and the ability to tune for as much boost as your octane and/or fuel system will allow.

For most running pump fuels, expect power gains of around 100whp over stock. For those who want to push the factory turbos with a water/methanol injection kit and higher octane, fuel power gains of up to 240whp over stock are possible.

The JB4 also supports larger S63TU turbos. We've had customers report as much as 900hp to the wheels using simple Stage1 turbos! The JB4 is absolutely the most flexible and easy to use tuning solution for the s63tu platform and is even compatible with cars already running flash maps who want to add more power, WMI control, or extra features to their tuning.No ECU flash needed and compatible with locked ECUsInstallation is fully reversible, attaching to the TMAP sensors and OBDII port.

The included BCM wires are optional and allow the JB4 to take direct control of the wastegates for more precise boost targeting for higher boost maps.The JB4 is a full plug and play device that installs and removes in minutes at home without special tools and unlike flash maps that permanently write over your DME with the JB4 your DME is never aware it's running more than the factory power levels. And when you're ready to change things up the JB4 is not VIN locked and can be moved to your next vehicle or resold.

For those running a DCT transmission, we've found the factory clutch packs are only good for around 640whp before they start slipping. If you are planning for more power than this, plan to upgrade to Dodson or SSP clutch packs sooner or later.

For those running aftermarket turbocharger systems with dual aftermarket Tial wastegates, we have a special version of the S63TU JB4 specifically to control Tial wastegates. Email us so we can manually invoice you for the JB4_S63TU_TIAL version.

For the current map guide, firmware, and notes, refer to this thread. Wirelessly Connect to your JB4: Grab our all-new JB4 PRO smartphone connection 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.

Vehicle Fitment

• BMW M5
• 2012-2017 BMW F10 M5BMW M6
• 2012-2017 BMW F12 13 M6BMW X5M/X6M
• 2015-2019 BMW F85 F86 X5M and X6M