The JB4 is a plug & play tune available for turbocharged vehicles. 2020 -Present Subaru Outback XT 2.4L 4 cyl.2020 -Present Subaru Legacy XT 2.4L 4 cyl.2019 -Present Subaru Ascent 2.4L 4 cyl.Includes the rugged JB4 billet aluminum enclosure for protection.Not VIN locked and can be removed without a trace and resold down the road.91 octane fuel or better required for performance gains.Fuel economy unchanged during normal driving.Runs as smoothly as stock, this is how your vehicle should have come from the factory.Improved performance over non-integrated chip tunes.CANbus OBDII integration offering unrivaled tuning features and performance.The JB4 offers a lot more performance, functionality, and safety than your average performance chip.Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment.Boost by gear in 1st, 2nd, and 3rd can be controlled via the JB4 app for a perfect launch.View and record up to 30 different gauges/engine parameters in real-time with the JB4 app.
2022 WRX TUNE SOFTWARE
Preloaded with custom JB4 Subaru tuning software and up to 8 maps for various fuel and modification levels.Power gains of up to 50hp to the wheels on a stock vehicle.
2022 WRX TUNE SERIES
Often imitated but never duplicated the JB4 has been the gold standard in plug and play turbocharged performance tuning for over a decade.1 Series (N54) E81 / E82 / E87 / E88 / 1M 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.
2022 WRX TUNE FREE
BMS regularly publishes free mapping and firmware updates adding performance and features as ongoing development allows.
2022 WRX TUNE BLUETOOTH
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. The JB4 tuner installs between your car's sensors and the DME/ECU (computer) and manipulates vehicle performance through these connections making your vehicle much faster.
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