{"product_id":"gen1-gen2-b58-bmw-jb4","title":"JB4 for BMW GEN1 \u0026 GEN2 B58","description":"\u003ch3\u003ePower gains of up to \u003cspan style=\"color: #ff2a00;\"\u003e120HP\u003c\/span\u003e \u0026amp; \u003cspan style=\"color: #ff2a00;\"\u003e120TQ \u003c\/span\u003eto the wheel on a stock B58 \u003cspan\u003ewithout the risks of flashing!\u003c\/span\u003e\n \u003c\/h3\u003e\n \u003cp\u003eThe \u003cstrong\u003eJB4 B58 tuner\u003c\/strong\u003e from Burger Motorsports is the most advanced plug \u0026amp; play tuning system available for BMW B58 turbocharged engines. Power gains of up to \u003cstrong\u003e120 horsepower and 120 lb-ft torque at the wheels\u003c\/strong\u003e are possible on a completely stock B58 engine running pump gas. Vehicles equipped with bolt-on upgrades, higher octane fuel, E85 mixtures, or larger turbochargers can see even greater gains.\u003c\/p\u003e\n \u003cmeta charset=\"utf-8\"\u003e\n \u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong\u003eNow includes the JB4PRO adapter and free app built in!\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eNo ECU flash required and fully compatible with locked 🔒 ECUs.\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThe JB4 includes a simple \u003cstrong\u003eplug \u0026amp; play wiring harness\u003c\/strong\u003e allowing quick installation and removal while delivering advanced tuning capabilities unavailable in other tuning systems. Features include on-the-fly map switching between stock and performance maps, boost-by-gear control for improved traction, progressive water\/methanol integration, built-in data logging, fault code reading and clearing, direct electronic wastegate control to prevent throttle closure with exhaust upgrades, exhaust flapper control on most models, and much more.\u003c\/p\u003e\n \u003cp\u003eUnlike traditional ECU flash tuning, the JB4 does not require staged upgrades or additional modifications. Install it as your first upgrade and immediately experience stronger turbo response, smoother power delivery, and significantly improved acceleration.\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eOptional fuel pressure connection for Gen2 B58:\u003c\/strong\u003e Allows the JB4 to directly control fuel pressure and fuel trims, particularly useful for vehicles running ethanol blends such as E30 or E85.\u003c\/p\u003e\n \u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/JB4-PRO-APP-FREE_1024x1024.jpg?v=1760906303\" alt=\"JB4 PRO smartphone tuning app for BMW B58 engines\" style=\"float: none;\"\u003e\u003c\/div\u003e\n \u003cmeta charset=\"utf-8\"\u003e\n \u003cp\u003e\u003cb\u003eWirelessly Connect to your JB4: \u003c\/b\u003e\u003cspan\u003eOur all-new \u003c\/span\u003e\u003cstrong\u003eJB4 PRO\u003c\/strong\u003e\u003cspan\u003e smartphone connection is included to wirelessly connect the JB4 tuner to your Bluetooth 4.0 compatible iOS or Android device. This option allows 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. Our new adapter fits fully inside the JB4 enclosure for enhanced weather protection and a more streamlined look. The JB4PRO Free app features an intuitive easy-to-use interface, help buttons, and advanced log analysis tools that can estimate the performance of your car and help identify any tuning concerns. \u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003eFor more information about the \u003cstrong\u003eJB4PRO mobile app\u003c\/strong\u003e \u003ca href=\"https:\/\/www.jb4tech.com\/forum\/model-specific-engine-tuning-modification-discussion\/jb4pro-free-app\/851437-what-is-the-jb4pro-free-app#post851437\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eclick here\u003c\/a\u003e.\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eJB4 Map Guide for B58\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e\n \u003cstrong\u003eMap0:\u003c\/strong\u003e Stock tuning – JB4 disabled\u003c\/li\u003e\n \u003cli\u003e\n \u003cstrong\u003eMap1:\u003c\/strong\u003e +3psi over stock (91 octane)\u003c\/li\u003e\n \u003cli\u003e\n \u003cstrong\u003eMap2:\u003c\/strong\u003e +4psi over stock (91-93 octane)\u003c\/li\u003e\n \u003cli\u003e\n \u003cstrong\u003eMap3:\u003c\/strong\u003e +6psi over stock (93+ octane)\u003c\/li\u003e\n \u003cli\u003e\n \u003cstrong\u003eMap4:\u003c\/strong\u003e Absolute target map with peak target of 20psi (93+ octane and\/or E30)\u003c\/li\u003e\n \u003cli\u003e\n \u003cstrong\u003eMap5:\u003c\/strong\u003e Absolute target map with peak target of 22psi (E30+ recommended)\u003c\/li\u003e\n \u003cli\u003e\n \u003cstrong\u003eMap6:\u003c\/strong\u003e Custom user tuning map\u003c\/li\u003e\n \u003cli\u003e\n \u003cstrong\u003eMap7:\u003c\/strong\u003e Progressive water\/methanol tuning map\u003c\/li\u003e\n \u003cli\u003e\n \u003cstrong\u003eMap8:\u003c\/strong\u003e Valet \/ Low boost map\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003eThis \u003cstrong\u003eB58 JB4 tuner\u003c\/strong\u003e is compatible with \u003cstrong\u003eGEN1 and GEN2 B58 engines\u003c\/strong\u003e. For the newest B58TU2 GEN3 motor please refer to the \u003ca href=\"https:\/\/burgertuning.com\/products\/bmw-b58-gen3-jb4-tuner\"\u003eB58 GEN3 JB4 product page\u003c\/a\u003e.\u003c\/p\u003e\n \u003cp\u003eJB4_B58 is CARB approved under Executive Order \u003cstrong\u003eD-744-4\u003c\/strong\u003e for many 2016-2018 BMW applications including the 230i, 330i, 430i, 530i, 340i, 440i, 740i, M240i, and X1.\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eJB4 Power Gains, Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\u003c\/ul\u003e\n \u003cp\u003e• Power gains of up to 100hp to the wheels on a stock vehicle\u003cbr\u003e• Improves 0-60 times and 1\/4 mile times\u003cbr\u003e• Preloaded with custom JB4 BMW tuning software and up to 8 maps for various fuel and modification levels\u003cbr\u003e• Ethanol (E85) compatible tuning maps\u003cbr\u003e• Able to read\/delete fault codes\u003cbr\u003e• View and record up to 40 different gauges\/engine parameters in real time with the JB4 app.\u003cbr\u003e• Boost by gear in 1st, 2nd, and 3rd can be controlled via the JB4 app for a perfect launch\u003cbr\u003e• Exhaust flap control for via BC button for most models.\u003cbr\u003e• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment\u003cbr\u003e• The JB4 offers a lot more performance, functionality, and safety than your average performance chip\u003cbr\u003e• Quick Plug \u0026amp; Play Installation\u003cbr\u003e• CANbus OBDII integration offering unrivaled tuning features and performance\u003cbr\u003e• Improved performance over non-integrated chip tunes\u003cbr\u003e• Runs as smoothly as stock, this is how your vehicle should have come from the factory\u003cbr\u003e• Compatible with all driving modes\u003cbr\u003e• Fuel economy unchanged during normal driving\u003cbr\u003e• 91 octane fuel or better required for performance gains\u003cbr\u003e• Not VIN locked and can be removed without a trace and resold down the road\u003cbr\u003e• Includes the rugged JB4 billet aluminum enclosure for protection\u003cbr\u003e• \u003cspan class=\"il\"\u003eDesigned\u003c\/span\u003e and assembled in the USA\u003cbr\u003e• 5-year warranty\u003c\/p\u003e\n \u003cp\u003e \u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eVehicle Fitment (GEN1 \u0026amp; GEN2 B58)\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eBMW 1 Series\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e2016-2019 F20 \/ F21 BMW M140i\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eBMW 2 Series\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e2022+ G42 BMW M240i including xDrive\u003c\/li\u003e\n \u003cli\u003e2016-2021 F22 \/ F23 BMW M240i including xDrive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eBMW 3 Series\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e2020-2024 G20 \/ G21 BMW M340i including xDrive\u003c\/li\u003e\n \u003cli\u003e2016-2018 F30 BMW 340i including xDrive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eBMW 4 Series\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e2021-2024 G22 \/ G23 \/ G26 BMW M440i including Gran Coupe and xDrive\u003c\/li\u003e\n \u003cli\u003e2016-2020 F32 \/ F33 \/ F36 BMW 440i including Gran Coupe and xDrive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eBMW 5 Series\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e2017-2023 G30 \/ G31 BMW 540i including xDrive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eBMW 6 Series\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e2018-2023 G32 BMW 640i including xDrive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eBMW 7 Series\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e2016-2022 G11 \/ G12 BMW 740i including xDrive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eBMW 8 Series\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e2018+ G14 \/ G15 \/ G16 BMW 840i including Gran Coupe and xDrive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eBMW X Series\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e2018-2024 G01 BMW X3 M40i\u003c\/li\u003e\n \u003cli\u003e2019-2024 G02 BMW X4 M40i\u003c\/li\u003e\n \u003cli\u003e2019-2022 G05 BMW X5 40i\u003c\/li\u003e\n \u003cli\u003e2020-2023 G06 BMW X6 40i\u003c\/li\u003e\n \u003cli\u003e2019-2022 G07 BMW X7 40i\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eBMW Z4\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e2019+ G29 BMW Z4 M40i\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eWhat is a JB4?\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThe JB4 is a plug \u0026amp; play performance tuner for turbocharged vehicles. It connects between engine sensors and the factory ECU allowing it to safely adjust boost pressure, ignition timing, and fueling to produce significant horsepower gains while retaining factory safety systems.\u003c\/p\u003e\n \u003cp\u003eThe JB4 stands apart from other tuning systems through advanced CANbus integration, smartphone connectivity, ethanol compatibility, and continuous firmware updates that expand functionality and performance over time.\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eIs the JB4 a real tune?\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eYes. The JB4 actively adjusts boost, timing, air-fuel ratios, and fuel trims using real-time engine data through its CANbus connection. This allows it to produce performance gains similar to ECU flash tuning without permanently modifying the ECU.\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/burgertuning.com\/pages\/faq\"\u003e \u003cimg alt=\"JB4 Frequently Asked Questions\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/jb4-faq-bms-2400_ebe313c1-7832-4131-8f06-a40f5b967b9f_1024x1024.jpg?v=1578019911\"\u003e \u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/www.jb4tuned.com\/instructions\/JB4_BMW_B48_B58_Install_Guide.pdf\"\u003e \u003cimg alt=\"JB4 B58 installation guide\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/Download-the-install-guide-2020-1.svg\"\u003e \u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/www.jb4tuned.com\/instructions\/JB4_BMW_B48_B58_INSTALL_CARB.pdf\"\u003e California customers – Download the CARB compliant installation guide \u003c\/a\u003e\u003c\/p\u003e\n \u003ch3\u003e\n \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/EVuyYQU3Jfs?si=qA6022qvuAVXY3hN\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003cbr\u003e\u003cbr\u003eStock vs JB4 Dyno Results\u003c\/h3\u003e\n \u003cp\u003e2020 BMW M340i JB4 + BMS Intake on E30\u003c\/p\u003e\n \u003cp\u003e\u003cimg alt=\"BMW M340i B58 JB4 dyno results\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/m340_package_dyno_1024x1024.png?v=1675211253\"\u003e\u003c\/p\u003e\n \u003cp\u003e2016 BMW 340xi B58 – 93 Octane vs E30\u003c\/p\u003e\n \u003cp\u003e\u003cimg alt=\"BMW 340xi B58 dyno tuned vs stock\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/bmw-340xi-dyno_1024x1024.png?v=1663632714\"\u003e\u003c\/p\u003e\n \u003cp\u003eBMW Z4 B58 – 490whp with JB4 Map5 and E40\u003c\/p\u003e\n \u003cp\u003e\u003cimg alt=\"BMW Z4 B58 dyno results JB4\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/z4_b58_dyno_1024x1024.png?v=1663633668\"\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan\u003eBest Tuner for BMW B58 Engine is the JB4. \u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e \u003c\/p\u003e","brand":"Burger Motorsports","offers":[{"title":"Gen1 (2016-2019)","offer_id":55463178011009,"sku":"B58_GEN1+PRO ADAPTER","price":778.7,"currency_code":"GBP","in_stock":true},{"title":"Gen1 (2016-2019) *** CARB APPROVED ***","offer_id":55463178043777,"sku":"B58_GEN1**CARB**+PRO ADAPTER","price":778.7,"currency_code":"GBP","in_stock":true},{"title":"Gen2 (2020+)","offer_id":55463178076545,"sku":"B58_GEN2+PRO ADAPTER","price":778.7,"currency_code":"GBP","in_stock":true},{"title":"Gen2 (2020+) with fuel pressure sensor [+","offer_id":55463178109313,"sku":"B58_GEN2_FP+PRO ADAPTER","price":908.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/9465\/6700\/files\/jb4-tuner-00002.jpg?v=1774346117","url":"https:\/\/www.nforcd.com\/products\/gen1-gen2-b58-bmw-jb4","provider":"Nforcd","version":"1.0","type":"link"}