{"product_id":"n54-jb4-bmw-performance-tuner","title":"N54 JB4 BMW Performance Tuner","description":"\u003ch3\u003eN54 JB4 BMW Performance Tuner\u003c\/h3\u003e\n\n\u003cp\u003eHow about up to 80hp to the wheels (100hp crank) on a completely stock car, up to 160hp to the wheels on factory turbos, or up to 350hp to the wheels on a fully modified car with larger turbo(s)? The JB4 includes a simple plug and play installation harness and is compatible with all ECU versions and transmission types. It's everything you need to take your N54 powered vehicle from mild to wild.\u003c\/p\u003e\n\n\u003cp\u003eIn addition to several performance maps which can be selected \"on the fly\" right from the driver's seat the JB4 includes a 100% stock bypass map, a valet mode, ethanol fuel (E85) support, progressive water\/methanol injection support, racing fuel map, an auto-tuning map that adjusts the JB4 mapping to your current climate, octane, vehicle condition, and modifications continuously, and for those interested in an rpm by rpm user adjustable map. Other features include optional in-dash gauges for boost and other engine parameters, a programmable shift light, on the fly adjustable torque limiting to aid with launches at the track, an optional 2STEP rev limiter \u0026amp; no lift shifting for manual transmission cars, an optional speed delimiter, and much more.\u003c\/p\u003e\n\n\u003cp\u003eRemember 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. As you decide to modify your car further the JB4 is set up to grow with your vehicle. Whether you're racing a 100% OEM car on pump gas or a 700whp single turbo drag queen, the JB4 has the perfect mix of performance, features, flexibility, and support to ensure your car performs to the best of its potential!\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: left;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/JB4-app-2025.png?v=1741927767\" alt=\"PSI\" style=\"margin-bottom: 16px; float: none;\"\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eWirelessly 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.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This item is not CARB (California Air Resource Board) exempt and is not legal for sale or use in the state of California.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.jb4tech.com\/forum\/model-specific-engine-tuning-modification-discussion\/n54\/115-e-series-n54-jb4\"\u003eClick here for the latest N54 JB4 firmware, map guide, and details.\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eN54 JB4 Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eN54 Power gains of up to 100hp and 100tq to the wheels on a stock vehicle\u003c\/li\u003e\n  \u003cli\u003eImproves 0-60 and quarter mile times.\u003c\/li\u003e\n  \u003cli\u003eIncludes multiple tuning maps for different fuel types.\u003c\/li\u003e\n  \u003cli\u003eQuick plug and play installation.\u003c\/li\u003e\n  \u003cli\u003eSupports E85 ethanol blends.\u003c\/li\u003e\n  \u003cli\u003eReads and deletes fault codes.\u003c\/li\u003e\n  \u003cli\u003eDisplays and logs up to 40 engine parameters.\u003c\/li\u003e\n  \u003cli\u003eBoost by gear control for improved traction.\u003c\/li\u003e\n  \u003cli\u003eControls exhaust flap operation on supported vehicles.\u003c\/li\u003e\n  \u003cli\u003eCompatible with the JB4 Mobile app.\u003c\/li\u003e\n  \u003cli\u003eOffers better performance and safety than basic chip tunes.\u003c\/li\u003e\n  \u003cli\u003eFull CANbus integration.\u003c\/li\u003e\n  \u003cli\u003eRuns as smoothly as stock.\u003c\/li\u003e\n  \u003cli\u003eCompatible with all driving modes.\u003c\/li\u003e\n  \u003cli\u003eNo impact on fuel economy during normal driving.\u003c\/li\u003e\n  \u003cli\u003eRequires 91 octane or better for performance gains.\u003c\/li\u003e\n  \u003cli\u003eNot VIN locked and fully removable.\u003c\/li\u003e\n  \u003cli\u003eIncludes billet aluminum enclosure.\u003c\/li\u003e\n  \u003cli\u003eDesigned and assembled in the USA.\u003c\/li\u003e\n  \u003cli\u003e5-year warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBMW 1 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2008-2010 E82 BMW 135i Coupe\u003c\/li\u003e\n  \u003cli\u003e2008-2010 E88 BMW 135i Convertible\u003c\/li\u003e\n  \u003cli\u003e2011 E82 BMW 1M\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eBMW 3 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2006-2010 E90 BMW 335i Sedan including xDrive\u003c\/li\u003e\n  \u003cli\u003e2006-2010 E91 BMW 335i Touring including xDrive\u003c\/li\u003e\n  \u003cli\u003e2006-2010 E92 BMW 335i Coupe including xDrive\u003c\/li\u003e\n  \u003cli\u003e2007-2010 E93 BMW 335i Convertible\u003c\/li\u003e\n  \u003cli\u003e2011-2013 E92 BMW 335is\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eBMW 5 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2008-2010 E60 BMW 535i Sedan including xDrive\u003c\/li\u003e\n  \u003cli\u003e2008-2010 E61 BMW 535i Touring including xDrive\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eBMW X Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2008-2010 E71 BMW X6 xDrive35i\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eBMW Z Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2009-2016 E89 BMW Z4 sDrive35i and Z4 sDrive35is\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is a JB4?\u003c\/strong\u003e\u003cbr\u003e\nThe JB4 is a plug and 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 be quickly 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.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the JB4 a real tune?\u003c\/strong\u003e\u003cbr\u003e\nYes the JB4 is a real tune. By tapping into specific sensors and CANbus for real time vehicle data the JB4 is able to alter your boost, timing, AFR, and\/or fuel trims, to a similar degree an ECU reflash would, but without the vehicle ever knowing its been tuned. The result is safe, smooth, and significant power and torque gains while retaining your factory safety systems and without having to unlock\/flag your ECU.\u003c\/p\u003e\n\n\u003cp\u003e\n  \u003ca href=\"https:\/\/burgertuning.com\/pages\/faq\"\u003e\n    \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\n  \u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: left;\"\u003e\n  \u003ca href=\"https:\/\/www.jb4tuned.com\/instructions\/JB4PnP.pdf\"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/Download-the-install-guide-2020-1.svg\" alt=\"Install Guide\" style=\"margin-bottom: 16px; float: none;\"\u003e\n  \u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eDYNO RESULTS\u003c\/h3\u003e\n\n\u003cp style=\"text-align: left;\"\u003eStock, JB4 on a completely stock automatic 135i, on 91 octane\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: center;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/jb4_n54_bmw_135_335_tuned_vs_stock_dyno_1024x1024.jpg?v=1544742911\" alt=\"BMW 335i performance chip\" style=\"float: none;\" width=\"1024\" height=\"1024\"\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"text-align: left;\"\u003eJB4 on an automatic 335i with Exhaust and BMS intake, on 93 octane\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: center;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/dyno2_1024x1024.jpg?v=1544742942\" alt=\"BMW 335i performance chip\" style=\"float: none;\" width=\"1024\" height=\"1024\"\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eJB4, Exhaust, BMS intake, BMS Flash, on 50% E85 fuel\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: center;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/dyno3-1_1024x1024.jpg?v=1544743055\" alt=\"JB4, Exhaust, BMS intake, BMS Flash, on 50% E85 fue\" style=\"float: none;\"\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"text-align: left;\"\u003eJB4, RB Hybrid Turbo Upgrade, Exhaust, BMS intake, BMS Flash, BMS Methanol Injection, Larger Intercooler, on 50% E85 fuel\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: center;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/dyno4-1_1024x1024.jpg?v=1544743086\" alt=\"JB4, RB Hybrid Turbo Upgrade, Exhaust, BMS intake, BMS Flash, BMS Methanol Injection, Larger Intercooler, on 50% E85 fuel\" style=\"float: none;\"\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"text-align: left;\"\u003eJB4 Optional Phone Software\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: center;\"\u003e\n  \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/tqNWgq47A1s\" width=\"560\" height=\"315\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: center;\"\u003e\n  \u003ca href=\"https:\/\/www.jb4tech.com\/forum\/model-specific-engine-tuning-modification-discussion\/n54\/115-e-series-n54-jb4\"\u003eClick here for the latest JB4 firmware, map guide, and details\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: center;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/JB4_N54_535_performance_tuner_chip_burger_tuning_motorsports_135_335_E90_E92_large.jpg?v=1544743174\" alt=\"BMW 335i performance chip\" style=\"float: none;\"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\"\u003e\n  \u003cstrong\u003eN54 JB4 Install Video\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"text-align: center;\"\u003e\n  \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/XN-NjwWPQro\"\u003e\u003c\/iframe\u003e\n\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: left;\"\u003e\n  \u003cstrong\u003eJB4 135i 335i Steering Wheel Controls Demo Video\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: center;\"\u003e\n  \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/HDjD4OcDIGU\" width=\"560\" height=\"315\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eJB4 Optional In Dash Boost Gauge\/Shift Light Demo\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: center;\"\u003e\n  \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/fBv40XoMFnw\" width=\"560\" height=\"315\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\"\u003e\n  \u003cstrong\u003eJB4 Optional Startup Gauge Sweep\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: center;\"\u003e\n  \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/NNr8ovwt8Lc\" width=\"560\" height=\"315\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e","brand":"Burger Motorsports","offers":[{"title":"N54 JB4","offer_id":45957366251580,"sku":"N54 JB4","price":379.0,"currency_code":"USD","in_stock":true},{"title":"N54 JB4 + JB4 Bluetooth Wireless Phone\/Tablet Connect Kit Rev 3.7 (Separate Power Wire)","offer_id":45957366284348,"sku":"N54 JB4 + JB4 Bluetooth Wireless (Separate Power Wire)","price":478.0,"currency_code":"USD","in_stock":true},{"title":"N54 JB4 + BMS Data Cable","offer_id":45957366317116,"sku":"N54 JB4 + DATA CABLE","price":419.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/5934\/4956\/files\/2025-N54-JB4-tuner.jpg?v=1786042491","url":"https:\/\/rpm-racing.com\/products\/n54-jb4-bmw-performance-tuner","provider":"Racing Precision Motorsports","version":"1.0","type":"link"}