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 really 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.

Installation 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. Checkout our S63TU tuning forum on n54tech.com for the latest map guide, dyno charts, and tuning suggestions. Made in USA. 5 Year Warranty.

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.

For those running aftermarket turbocharged 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:
http://www.n54tech.com/forums/showthread.php?t=31292

• Power gains of up to 60hp and 60tq to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Quick Plug & Play Installation
• CANbus integration offering unrivaled tuning features and performance 
• Runs as smoothly as stock, this is how your N55 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

S63TU JB4 MAP GUIDE

Map 0: JB4 disabled
Map 1: 4-5psi over stock additive. Suggested for most pump gas applications with and without BCM.
Map 2: 22psi peak absolute. BCM required. In some cases we've found this map maxes out the factory fuel trims. In those cases only map1 or map3 can be used without WMI injection.
Map 3: 18psi peak absolute.
Map 4: VALET/safety map, less boost than factory
Map 5: //M map ramping boost up to redline
Map 6: Custom target map
Map 7: 25psi peak (e.g. race gas, BCM required)
Map 8: Progressive meth map. Peak boost based on meth additive. 0 = 19psi, 75 = 30psi. BCM suggested.

Note without BCM all maps, especially the higher target maps, will under target on boost.

JB4 with OBDII Cable

BCM Module

BMW M5
F10 M5 (2012 - 2017)

BMW M6
F06/F12/F13 M6 (2012-2017)

BMW X5M/X6M
F85/F86 (2015+)

To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number(UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout. 

JB4 Dyno results

JB4 & Pump Fuel

JB4, BMS intake, BMS chargepipes, methanol injection, Dodson clutch packs & 95 octane

JB4 on stock car with 5 gallons of E85 mixed with 91

F-S63-JB4

Manufactured by

Burger Motorsports

Warranty

5 Year BMS Repair Warranty

JB4 Optional Phone Software

Change maps on the fly