{"product_id":"s58-jb4-tuner-for-2021-bmw-g80-m3-g82-g83-m4-2023-g87-m2","title":"S58 JB4 Tuner for 2021+ BMW G80 M3, G82 G83 M4, \u0026 2023+ G87 M2","description":"\u003ch2 data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGains are 80whp\/100wtq on pump gas and up to 150whp\/175tq on higher octane or E85 mixtures.\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe ultimate tune for your S58 powered G87 M2, G80 M3, or G82 M4, the JB4 allows you to go from factory stock to full race and everywhere in between. The JB4 installs and removes easily and includes many unique features not found in any other tune, including user-adjustable 1st and 2nd gear boost limiting, smartphone integration, electronic wastegate control, ethanol fuel support, and built-in advanced CANbus-based diagnostic tools. Installation is easy and completely removable with no splicing or cutting of factory wires making the JB4 an excellent choice for your S58 engine.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eFor the latest S58 performance results, updates, firmware, and map guide, be sure to visit\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.jb4tech.com\/forum\/model-specific-engine-tuning-modification-discussion\/m\/27316-\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/www.jb4tech.com\/forum\/model-specific-engine-tuning-modification-discussion\/m\/27316-\u0026amp;source=gmail\u0026amp;ust=1661448575194000\u0026amp;usg=AOvVaw39u6pgHIIBjFS-KYVPE0cU\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.jb4tech.com\/forum\/model-specific-engine-tuning-modification-discussion\/m\/27316-\" target=\"_blank\"\u003ehttps:\/\/www.jb4tech.com\/forum\/\u003cwbr data-mce-fragment=\"1\"\u003emodel-specific-engine-tuning-m\u003cwbr data-mce-fragment=\"1\"\u003eodification-discussion\/m\/27316\u003cwbr data-mce-fragment=\"1\"\u003e-\u003c\/wbr\u003e\u003c\/wbr\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWirelessly connect the S58 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 S58 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.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eS58 JB4 FEATURES \u0026amp; BENEFITS\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e• Gains are 80whp\/100wtq on pump gas and up to 150whp\/175wtq on higher octane or E85 mixtures.\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e• Improves 0-60 times and 1\/4 mile times\u003cbr\u003e• Preloaded with custom S58 JB4 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 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• 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• Made in the USA\u003cbr\u003e• Free USA Shipping\u003cbr\u003e• 5 year warranty\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan id=\"bold2\"\u003e\u003cb\u003eS58 JB4 Vehicle Fitment\u003c\/b\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan class=\"bigblack\" data-mce-fragment=\"1\"\u003eBMW M\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"bigblack\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003e2\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e• 2023\u003cspan data-mce-fragment=\"1\"\u003e-Present\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eS58 G87 BMW M2\u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan class=\"bigblack\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cbr\u003eBMW M3\u003c\/span\u003e\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• 2021-Present S58 G80 BMW M3\u003cbr data-mce-fragment=\"1\"\u003e• \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e2021-Present S58 G80 BMW M3 Competition\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"bigblack\"\u003eBMW M4\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e• 2021-Present S58 G82 BMW M4\u003cbr\u003e• \u003c\/span\u003e\u003cspan\u003e2021-Present S58 G82 BMW M4 Competition\u003cbr\u003e• 2023-Present S58 G82 BMW M4 CSL\u003cbr\u003e• 2022-Present S58 G83 BMW M4 Convertible  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eWhat is a JB4?\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eThe JB4 is a plug \u0026amp; 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 \u0026amp; 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. \u003cspan\u003e \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eIf your looking for\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e S58 tuning for your G87 M2, G80 M3, or G82 M4, the JB4 is a perfect S58 \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003ee\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003engine tune. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eG80 M3 JB4 Dyno, 30% E85 fuel, JB4, BMS S58 Intake\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/g80_BMW_M3-jb4-bms_intake_dyno_1024x1024.png?v=1626106887\" alt=\"G80 M3, 30% E85 fuel, JB4, BMS Prototype Intake dyno S58 JB4 Tuner BMW G80 M3 G82 M4tune tuning software stage 2 Stage 3 unlocked locked ECU\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/g80_BMW_M3-jb4-bms_intake_dyno_1024x1024.png?v=1626106887\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/burgertuning.com\/pages\/faq\"\u003e\u003cspan\u003e\u003cu\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/jb4-faq-bms-2400_ebe313c1-7832-4131-8f06-a40f5b967b9f_1024x1024.jpg?v=1578019911\" alt=\"JB4 FAQ\"\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JB4","offers":[{"title":"Standard \/ M2","offer_id":40419567206503,"sku":"","price":529.0,"currency_code":"USD","in_stock":true},{"title":"Standard \/ M3 \/ M4","offer_id":40419567239271,"sku":"","price":529.0,"currency_code":"USD","in_stock":true},{"title":"JB4 Wireless Mobile Smart Phone KIt \/ M2","offer_id":40419567272039,"sku":"","price":678.0,"currency_code":"USD","in_stock":true},{"title":"JB4 Wireless Mobile Smart Phone KIt \/ M3 \/ M4","offer_id":40419567304807,"sku":"","price":678.0,"currency_code":"USD","in_stock":true},{"title":"BMS Data Cable \/ M2","offer_id":40419567337575,"sku":"","price":569.0,"currency_code":"USD","in_stock":true},{"title":"BMS Data Cable \/ M3 \/ M4","offer_id":40419567370343,"sku":"","price":569.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/1716\/6183\/files\/B58-JB4_720x_bf9b0bea-d7b5-48f3-8a3d-24de6b10de77.webp?v=1707589190","url":"https:\/\/www.rockfordspeed.com\/products\/s58-jb4-tuner-for-2021-bmw-g80-m3-g82-g83-m4-2023-g87-m2","provider":"Rockford Speed","version":"1.0","type":"link"}