Instant power with easy plug & play installation

Ready to take your BMW N20 turbo to the next level? How about up to 50hp to the wheels (65hp 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, E85 compatibility, built in diagnostic code reading/deleting, expanded engine safety systems, free firmware updates, in dash boost gauge, the ability to control the exhaust flapper using your BC button, and much more.

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. For more advanced enthusiasts the BMS DATA or JB4 Mobile cable allows you to connect a laptop or smartphone for additional gauges, data logging, and free firmware updates as we add new features and maps. Also note some F10 and X chassis models require a JB4 mobile adapter or BMS data cable to select options bit#1 to enable the in-dash controls for those models.

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.

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.

NOTES: The X1 & Z4 N20 JB4 is very different than the F series N20 JB4. They use special firmware (with full dash control) and have a different CAN mounting location. The firmware is below and labeled for the X1/Z4 series N20. X1 N20 JB4 Install video & details here.

APPLICATIONS

2 Series
• 2014-2016 2 Series F22/F23 220/228i N20 & N26  2.0L TURBO 4 CYL – all vehicles select Electronic Wastegate version

3 Series
• 2012-2016 3 Series F30/F31 320/328 N20 & N26 2.0L TURBO 4 CYL

4 Series
• 2014-2016 4 Series F32/F33 420/428 N20 & N26 2.0L TURBO 4 CYL – all vehicles select Electronic Wastegate version

5 Series
• 2011-2016 5 Series F10 520/528 N20 & N26 2.0L TURBO 4 CYL

X Series
• 2011–2017 F25 X3 xDrive20i, xDrive28i 2.0L TURBO 4 CYL

E chassis X1 and Z4 
• 2013-2016 E89 Z4 28i 2.0L TURBO 4 CYL – select E Series X1 & Z4 in dropdown
• 2013-2015 E83 X1 28i/iX 2.0L TURBO 4 CYL – select E Series X1 & Z4 in dropdown

Wastegate Identification Chart. Pneumatic (PWG) or Electronic (EWG)?

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.

DYNO RESULTS

328i on pump gas dyno

320 JB4 dyno

328 E85 dyno

VIDEO

Brand

Burger Motorsports

Burger Motorsports is the manufacturer of the world-famous JB4 performance tuner. BMS has been pioneering performance tuning, intakes, and mods for street-inspired race cars since 2007.