BMS BMW S63TU JB4 Tuning Box with BCM Module for F10 M5, F06/F12/F13 M6, F85 X5M, F86 X6M
Part Number: F-S63-JB4
Unlock serious power and control from your twin-turbo S63TU V8 with the Burger Motorsports JB4 Tuning Box and Boost Control Module. This plug-and-play piggyback tuner is engineered specifically for the BMW S63TU platform and delivers advanced features such as on-the-fly map switching, boost by gear, in-dash boost display, full CANbus data logging, fault code read and delete, and integrated water/methanol control with progressive safety.
The JB4 + BCM combo is a proven, reversible tuning solution for the BMW F10 M5, F06 Gran Coupé M6, F12 M6 Convertible, F13 M6 Coupé, F85 X5M, and F86 X6M. Expect major gains on pump fuel and the headroom to push further with E85 blends, race fuel, or WMI. It also plays nicely with upgraded S63TU turbos and even complements existing flash tunes if you want more power and features.
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Why choose the JB4 for your S63TU
- Designed for the BMW S63TU 4.4 twin-turbo V8 in F10 M5, F06/F12/F13 M6, F85 X5M, and F86 X6M
- Plug-and-play installation using TMAP and OBDII connections, fully reversible
- On-the-fly map switching and boost limiting in lower gears for improved traction
- In-dash boost gauge, code read/delete, and comprehensive CANbus data logging
- Integrated water/methanol injection tuning with progressive safety controls
- BCM wiring enables direct wastegate control for precise boost targeting at higher power levels
- Compatible with cars already running a flash map
- Not VIN-locked; can be moved to another vehicle or resold
- Made in the USA with a 5-year BMS repair warranty
Real-world gains: On pump fuel, many see around 100whp over stock. With higher octane and WMI, gains of up to 240whp over stock are possible. The JB4 also supports larger S63TU turbos, with customers reporting substantial wheel horsepower figures on upgraded turbos.
Transmission note: For DCT-equipped cars, the factory clutch packs are typically comfortable to roughly ~640whp before potential slip. If you plan to exceed this, consider performance clutch packs from suppliers such as Dodson or SSP.
Recommended add-ons
- BMS Data Cable for Windows laptop logging, mapping, and firmware updates
- JB4 Bluetooth Connect Kit for iOS/Android wireless control via JB4 Mobile app (app purchased separately)
S63TU JB4 Map Guide
- Map 0: JB4 disabled
- Map 1: 4 to 5 psi over stock additive. Ideal for most pump fuel setups, with or without BCM
- Map 2: 22 psi peak absolute. BCM required. May reach factory fuel trim limits on some cars
- Map 3: 18 psi peak absolute
- Map 4: Valet/safety map with less boost than stock
- Map 5: M-style map ramping boost to redline
- Map 6: Custom target map
- Map 7: 25 psi peak for high-octane or race fuel. BCM required
- Map 8: Progressive meth map. Peak boost scales with meth additive. BCM suggested
Note: Without BCM, higher-target maps will typically under-target on boost.
What's included
- JB4 with OBDII cable
- BCM Module
Vehicle compatibility
- BMW M5 F10 M5 (2012 to 2017)
- BMW M6 F06 Gran Coupé, F12 Convertible, F13 Coupé (2012 to 2017)
- BMW X5M / X6M F85 / F86 (2015+)
Installation and fitting
Installation is straightforward and fully reversible. The JB4 connects to the TMAP sensors and the OBDII port. The included BCM wiring is optional and enables direct wastegate control for higher boost precision.
Prefer professional fitting? Nforcd offers installation in Warwickshire. Email Sales@nforcd.com for a fitting quote.
Compatibility check
We verify fitment before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout and we will confirm compatibility for your specific BMW M5, M6, X5M, or X6M S63TU.
More information
Manufacturer:
Burger Motorsports
Warranty:
5 Year BMS Repair Warranty
Firmware, maps, and tuning notes:
Visit the official S63TU JB4 support thread on n54tech
Special applications:
Running dual aftermarket Tial wastegates? A specific S63TU JB4 variant is available to control them. Please email us for the JB4_S63TU_TIAL version.
Media
JB4 Optional Phone Software
Change maps on the fly
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