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N20/N26 BMW JB4
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.
JB4 Features & Benefits
• Power gains of up to 50hp and 60tq to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4 BMW tuning software and up to 8 maps for various fuel and modification levels
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• View and record up to 40 different gauges/engine parameters in real-time with the JB4 app.
• Boost by gear in 1st, 2nd, and 3rd can be controlled via the JB4 app for a perfect launch
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• The JB4 offers a lot more performance, functionality, and safety than your average performance chip
• Quick Plug & Play Installation
• CANbus OBDII integration offering unrivaled tuning features and performance
• Improved performance over non-integrated chip tunes
• Runs as smoothly as stock, this is how your vehicle should have come from the factory
• Compatible with all driving modes
• Fuel economy unchanged during normal driving
• 91 octane fuel or better required for performance gains
• Not VIN locked and can be removed without a trace and resold down the road
• Includes the rugged JB4 billet aluminum enclosure for protection
• Made in the USA
• Free USA Shipping
• 5 year warranty
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 &
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