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BMS BMW N55 JB4 (535i, 640i & X5)
Available on stock order
Learn more on stock order delivery.
Receive your order by tomorrow if ordered within
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For EWG JB4, you may wish to add the EWG Add-on connector to allow your JB4 to directly control your electronic wastegate raising the boost ceiling for more heavily modified N55 vehicles such as those using E85 or water/meth injection. Connector is not used on map1 or map2 even if installed.
Ready to take your twin turbo BMW to the next level?
How about up to 60hp to the wheels (80hp crank) on a completely stock car or up to 100hp to the wheels (120hp crank) on a fully modified car? The JB4 features a simple plug and play installation harness for easy installation and includes many features not found on any other tune. Including the ability to enable/disable the tuning from the drivers seat, gear dependent boost control to help with traction, ethanol and racing fuel support, built in diagnostic code reading/deleting, free firmware updates, and much more.
Remember the JB4 does not require any additional modifications or previous stages. Simply install the JB4 as your first and only modification and enjoy an entirely new fast and smooth racing experience. The JB4 also does not require any user setup or customization but for more advanced enthusiasts the BMS DATA cable allows you to connect via a laptop for data logging and free software updates.
The EWG add on connector remains optional and can be purchased separately for higher HP applications where direct EWG control is required.
Identifying Wastegate Type
F Chassis N55 JB4
BMW 5 Series
• 2011+ N55 BMW F10 F11 535i/ix
• 2010+ N55 BMW F07 535i/ix GT
BMW 6 Series
• 2011+ N55 BMW F12 F13 640i/ix
• 2011+ N55 BMW F06 640i/ix Gran Coupe
BMW X Series
• 2014+ N55 BMW F15 X5
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.
F Series N55 JB4 Dyno results
F30 335i with BMS intake, exhaust
F32 435i with BMS intake, exhaust
F22 M235i with intake, exhaust
F-N55-F10-JB4-PW-A (Pneumatic Wastegate Type A)
F-N55-F10-JB4-PW-B (Pneumatic Wastegate Type B)
F-N55-F10-JB4-EW (Electronic Wastegate)
5 Year BMS Repair Warranty
JB4 Optional Phone Software
Change maps on the fly:
JB4 S55 CAN Flap DEMO:
JB4 Optional Startup Gauge Sweep
F10 models will need to check their sensor type before ordering.
This does not apply to F30 models.