BMW B38/ B46/ B48/ B58 JB4 Tuner by Burger Motorsports (Gen1 & Gen2)

Power gains of up to 120whp and 120wtq. on a stock vehicle without the risks of flashing! The JB4 is the most advanced and feature-rich tuning system available for BMW's B58, B38, B46, and B48 engines, offering significant power gains, seamless integration, and unparalleled ease of use. With its plug-and-play design and innovative features, the JB4 transforms your driving experience without requiring additional modifications. For B58 Engines: Power Gains: Up to 120hp to the wheels (140hp crank) on a completely stock engine with pump gas. Gains are even higher with bolt-ons, E85 fuel mixtures, or larger turbos. Key Features: Simple plug-and-play installation for quick setup and removal. In-dash map switching: Seamlessly toggle between factory and performance maps. Optional in-dash gauge displays for real-time metrics like boost. Boost limiting by gear to enhance traction in lower gears. Support for progressive water/methanol injection. Built-in data logging and code reading capabilities. Optional direct EWG control to prevent throttle closure with exhaust upgrades. Exhaust flapper control for sound customization. For B38, B46, and B48 Engines: Power Gains: Up to 40hp to the wheels (55hp crank) on stock B48 engines with pump gas. Gains increase with bolt-ons, higher-octane fuel, E85 blends, or larger turbos. Features: Same advanced capabilities as the B58 model, including plug-and-play installation, map switching, and boost control. Automatic engine detection: Automatically adjusts for B38, B46, and B48 models upon boot-up. No additional tuning stages or prior modifications required. Unmatched Versatility: Works as a first and only modification or alongside other upgrades. Performance on Demand: Instant power gains and smooth, fast acceleration. Ease of Use: Requires no setup or customization, but advanced users can access additional features with the optional BMS DATA cable or REV3 mobile adapter for data logging and updates. JB4 Tuner Map Guide: Map0: Stock tuning, fully disable JB4Map1: 3psi over stock added (91 octane)Map2: 4psi over stock added (91-93 octane)Map3: 6psi over stock added (93+ octane)Map4: Absolute target map with peak target of 20psi (93+ and/or 30% E85, EWG connector suggested)Map5: Absolute target map with peak target of 22psi (30% E85+ fuel, EWG connector suggested)Map6: Custom tuning map -- see details on JB4tech.com B58 JB4 pageMap7: Progressive WMI map with tuning a function of meth flow and user-defined boost additive. Map8: VALET / Low Boost Map Note for 2018+ G chassis vehicles with the digital dash layout we have not yet added in the JB4 commands to allow in-dash control but will provide those via a free firmware update once developed. Until then a JB4 mobile adapter or BMS data cable is required for any map and setting changes.JB4_B58 is CARB Approved Under Executive Order (EO) No.D-744-4 for all 2016-2018 BMW 230i, 330i, 430i, 530i, 340i, 440i, 740i, M240i, and X1 applications. 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. A separate JB4 Mobile app purchase is also required. JB4 Power Gains, Features, & Benefits • Power gains of up to 120hp 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• Exhaust flap operation can be controlled in most JB4 applications• 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 2022+ BMW GEN3 B48/B58 JB4 Tuner - 228i (F44), 740i (G70), X1, X5, X7 JB4 Tuner for B48/B58 2020-Present Toyota Supra Mk5 (A90/A91) Note: If your BMW has a B38/B46/B48/B58 engine and you don't see your exact model on the list below or the links mentioned upper, please Message Us. BMW 1 Series 2016-2019 F20 F21 GEN1 B58 BMW M140i 2019-2024 F40 F40 M135i 2020+ F40 B48 BMW 128ti 2019-2019 F40 B38 BMW 118i 2016-2019 F20/F21 B48 BMW 120i, 125i 2015-2019 F20/F21 B38 BMW 116i, 118i BMW 2 Series 2022+ G42 GEN2 B58 BMW M240i including xDrive 2016-2021 F22 F23 GEN1 B58 BMW M240i including xDrive 2022+ G42 B48 BMW 220i, 230i 2017-2021 F22 F23 B48 BMW 230i including xDrive 2017-2021 F22 F23 B48 BMW 225i including xDrive 2017-2021 F22 F23 B46 BMW 220i including xDrive 2015-2021 F22 F23 B38 BMW 218i 2015-2021 F45 F46 B38 BMW 216i Active tourer and GT 2014-2020 F45 F46 B38 BMW 218i, 220i Active tourer and GT 2019+ F44 B48 BMW M235i Gran Coupé including xDrive BMW 3 Series 2020-2024 G20 G21 GEN2 B58 BMW M340i including xDrive 2015-2019 F30 GEN1 B58 BMW 340i including xDrive 2019+ G20 G21 B46 B48 BMW 318i, 320i, 320Li, 320e, 330i, 330e, 320Li including xDrive 2015-2019 F30 B48 BMW 330i, 330e including xDrive 2015-2019 F30 B48 BMW 325i including xDrive 2015-2019 F30 B46 BMW 320i including xDrive 2015-2019 F30 B46 BMW 318i including xDrive BMW 4 Series 2021-2024 G22 G23 G26 GEN2 B58 BMW M440i including Gran Coupe and xDrive 2016-2020 F32 F33 F36 GEN1 B58 BMW 440i including Gran Coupe and xDrive 2021-Present G22 G23 G26 B48 BMW 420i, 430i including Gran Coupe and xDrive 2016-2020 F32 F33 F36 B48 BMW 430i including Gran Coupe and xDrive 2016-2020 F32 F33 F36 B48 BMW 425i including xDrive 2016-2020 F32 F33 F36 B46 BMW 420i including xDrive 2016-2020 F32 F33 F36 B38 BMW 418i BMW 5 Series 2017-2023 G30 G31 GEN2 B58 BMW 540i including xDrive 2017-2023 G30 B46 BMW B48 530i 530e including xDrive 2021-2023 G30 BMW 545e BMW 6 Series 2018-2023 G32 G33 GEN2 B58 BMW 640i including xDrive 2018+ G32 G33 B48 BMW 630i including xDrive BMW 7 Series 2016-2022 G11 G12 B58 BMW 740i including xDrive  2016-2022 G11 G12 B48 BMW 730i including xDrive BMW 8 Series 2018+ G15 G14 G16 GEN1 & GEN2 B58 BMW 840i including Gran Coupe and xDrive BMW X Series 2018-2024 G01 B48 B58 BMW X3 2.0i, X3 3.0i, X3 M40i including xDrive 2019-2024 G02 B48 B58 BMW X4 2.0i, X4 3.0i, X4 M40i including xDrive 2019-2022 G05 B58 BMW X5 40i including xDrive 2020-2023 G06 B58 X6 40i xDrive 2019-2022 G07 B58 BMW X7 40i including xDrive 2016+ F48 B46 B48 BMW X1 28i including xDrive 2018+ F47 B46 B48 BMW X2 28i including xDrive 2018+ G01 B48 BMW X3 2.0i, X3 3.0i including xDrive 2019+ G02 B48 BMW X4 2.0i, X4 3.0i including xDrive 2019+ G05 B48 BMW X5 30i including xDrive BMW Z4 2019+ G29 B58 BMW Z4 M40i  2019+ G29 B46 B48 BMW Z4 30i and Z4 20i 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 the 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. California Customers -- Download the CARB Version Installation Guide Stock vs. JB4 DYNO RESULTS 2020 BMW B58 M340i JB4 + BMS B58 Competition Intake and E30 2016 BMW 340xi B58, JB4, no other mods, 93 Octane vs E30 2020 B58 Powered BMW Z4 Dyno - 490whp with JB4 Map 5 and E40 mixture 2017 BMW 230i with B48 Engine, JB4 VIDEOSNo M? No problem! JB4 Tuned 240i beats G80 M3. CAN FLAP DEMO     BMW B38/B46/B48/B58 JB4 Install Videos