{"product_id":"bms-bmw-f-chassis-b46-b48-b58-jb4-220i-240i-320i-330i-340i-420i-440i-x1","title":"Burger Motorsports (BMS) JB4 Plug \u0026 Play Tuning Box for BMW B58 B48 B46 B38 | Piggyback ECU | M140i M240i 220i 230i 320i 330i 330e 340i 440i 540i 740i X3 X4 X5 Z4 | Bluetooth \u0026 Data Logging Ready","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eUnlock serious gains from your turbocharged BMW with the Burger Motorsports JB4 power module. The ultimate remap alternative for B58, B48, B46 and B38 engines, this advanced add-on controller delivers huge increases in horsepower and torque, sharper response and configurable performance maps for daily driving or track use.\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003cp\u003eAt MJ Modifications we run the JB4 on our own cars and our customers rave about the smooth OEM-like drivability, massive mid-range punch and easy control via the app. If you are searching for a BMW power box, ECU upgrade, tuning module, chip tuning alternative, stage 1 stage 2 style performance, or a safe way to wake up your M140i, M240i, 220i, 230i, 320i, 330i, 330e, 340i, 440i, 540i, 740i, X3, X4, X5 or Z4 without a bench flash, this is the proven choice.\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003eWhy enthusiasts choose this JB4 performance module\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eBig power on pump fuel. Typical gains up to 80 whp on B58 and up to 40 whp on B48 on standard cars. Even more with supporting hardware, higher octane, ethanol blends and upgraded turbos.\u003c\/li\u003e\n    \u003cli\u003eSimple installation with a dedicated harness. Fully reversible with no permanent changes and not VIN locked, so you can remove or resell later.\u003c\/li\u003e\n    \u003cli\u003eUp to eight selectable maps for different fuels and hardware. Cruise like stock when you want, unleash serious performance when you need it.\u003c\/li\u003e\n    \u003cli\u003eDeep CAN OBD integration for features you do not get with basic tuning chips: boost by gear, in-cluster gauge hijack options, exhaust valve control, water meth support, built-in data logging and fault code read and clear.\u003c\/li\u003e\n    \u003cli\u003eApp and laptop connectivity. Add the Bluetooth Connect Kit for smartphone control or use the BMS Data Cable on a Windows laptop for logging, map changes and free firmware updates.\u003c\/li\u003e\n    \u003cli\u003eRugged billet aluminium enclosure. Made in the USA with a 5 year BMS repair warranty for long-term confidence.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003e\u003cem\u003eLooking for a BMW B58 power upgrade, M140i power box, 340i tuning solution, 440i performance module, 330e tuning module, 320i or 330i stage 1 style tune, or B48 piggyback alternative to a flash? This JB4 unit is the most feature-rich option available.\u003c\/em\u003e\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003eHeadline benefits\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eUp to 80 wheel horsepower on B58 and up to 40 wheel horsepower on B48 depending on fuel and conditions.\u003c\/li\u003e\n    \u003cli\u003eStronger acceleration, improved 0 to 60 and quarter-mile potential.\u003c\/li\u003e\n    \u003cli\u003ePreloaded BMW-specific calibrations with on-the-fly map switching.\u003c\/li\u003e\n    \u003cli\u003eMore functionality and safety protections than traditional performance chips.\u003c\/li\u003e\n    \u003cli\u003eQuick install and removal. No coding required.\u003c\/li\u003e\n    \u003cli\u003eOEM-like smoothness across all driving modes.\u003c\/li\u003e\n    \u003cli\u003eFuel economy unchanged during gentle driving.\u003c\/li\u003e\n    \u003cli\u003eSmartphone app compatible for logging and adjustments.\u003c\/li\u003e\n    \u003cli\u003e91 octane or better recommended for performance maps. Ethanol blend compatible maps available.\u003c\/li\u003e\n    \u003cli\u003eRead and clear engine fault codes directly.\u003c\/li\u003e\n    \u003cli\u003eNot VIN locked. Removable and resellable.\u003c\/li\u003e\n    \u003cli\u003eMade in the USA with a 5 year BMS repair warranty.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003eWe highly recommend adding the \u003cstrong\u003eBluetooth Connect Kit\u003c\/strong\u003e or \u003cstrong\u003eBMS Data Cable\u003c\/strong\u003e to access logging, map selection and free firmware updates. The JB4 Mobile app is required for smartphone use.\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003eMap guide v13+\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eMap 0: Stock. Disables module for baseline driving or diagnostics.\u003c\/li\u003e\n    \u003cli\u003eMap 1: Additive, peak of 3 psi over stock. 91 octane.\u003c\/li\u003e\n    \u003cli\u003eMap 2: Additive, peak of 4 psi over stock. 91 to 93 octane.\u003c\/li\u003e\n    \u003cli\u003eMap 3: Additive, peak of 6 psi over stock. 93+ octane.\u003c\/li\u003e\n    \u003cli\u003eMap 4: Additive, peak of 6.5 psi over stock. 93+ octane.\u003c\/li\u003e\n    \u003cli\u003eMap 5: Additive, peak of 6 psi with more assertive timing for higher octane and bolt-ons.\u003c\/li\u003e\n    \u003cli\u003eMap 6: Custom user map allowing additive targets below 10 psi and absolute targets above 10 psi.\u003c\/li\u003e\n    \u003cli\u003eMap 7: WMI map. Boost varies with WMI additive and settings.\u003c\/li\u003e\n    \u003cli\u003eMap 8: Valet or reduced boost mode.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003eWhat you receive\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eF chassis B46 B48 B58 JB4 control unit\u003c\/li\u003e\n    \u003cli\u003eExtended OBDII cable for RHD cars, also fits LHD\u003c\/li\u003e\n    \u003cli\u003eEWG connector\u003c\/li\u003e\n    \u003cli\u003eBillet aluminium case\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003eVehicle compatibility\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBMW 1 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2021+ F40 B48 128ti\u003c\/li\u003e\n    \u003cli\u003e2019+ F40 B48 M135ix\u003c\/li\u003e\n    \u003cli\u003e2019+ F40 B38 118i\u003c\/li\u003e\n    \u003cli\u003e2015+ F20 F21 B58 M140i\u003c\/li\u003e\n    \u003cli\u003e2016+ F20 F21 B48 120i, 125i\u003c\/li\u003e\n    \u003cli\u003e2015+ F20 F21 B38 116i, 118i\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBMW 2 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2022+ G42 B58 M240i xDrive\u003c\/li\u003e\n    \u003cli\u003e2022+ G42 B48 220i, 230i\u003c\/li\u003e\n    \u003cli\u003e2017+ F22 F23 B58 M240i iX\u003c\/li\u003e\n    \u003cli\u003e2017+ F22 F23 B48 230i iX, 225i iX, 220i iX\u003c\/li\u003e\n    \u003cli\u003e2015+ F22 F23 B38 218i\u003c\/li\u003e\n    \u003cli\u003e2015+ F45 F46 B38 216i Active Tourer and GT\u003c\/li\u003e\n    \u003cli\u003e2014+ F45 F46 B38 218i, 220i Active Tourer and GT\u003c\/li\u003e\n    \u003cli\u003e2019+ F44 M235i iX\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\u003e2020+ G20 G21 B58 M340i M340iX\u003c\/li\u003e\n    \u003cli\u003e2019+ G20 G21 B46 B48 318i 320i 320Li 320e 330i 330iX 330e 320Li\u003c\/li\u003e\n    \u003cli\u003e2016 to 2019 F30 F31 F34 B58 340i 340iX\u003c\/li\u003e\n    \u003cli\u003e2016 to 2018 F30 F31 F34 B48 330i 330iX 330e\u003c\/li\u003e\n    \u003cli\u003e2016 to 2018 F30 F31 B48 325i 325iX\u003c\/li\u003e\n    \u003cli\u003e2016 to 2018 F30 F31 B46 320i 320iX\u003c\/li\u003e\n    \u003cli\u003e2016 to 2018 F30 F31 B46 318i 318iX\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBMW 4 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2021+ G22 G23 G26 B58 440i 440iX Gran Coupe\u003c\/li\u003e\n    \u003cli\u003e2021+ G22 G23 G26 B48 420i 430i 430iX Gran Coupe\u003c\/li\u003e\n    \u003cli\u003e2016 to 2020 F32 F33 F36 B58 440i 440iX Gran Coupe\u003c\/li\u003e\n    \u003cli\u003e2016 to 2020 F32 F33 F36 B48 430i 430iX Gran Coupe\u003c\/li\u003e\n    \u003cli\u003e2016 to 2020 F32 F33 F36 B48 425i 425iX\u003c\/li\u003e\n    \u003cli\u003e2016 to 2020 F32 F33 F36 B46 420i 420iX\u003c\/li\u003e\n    \u003cli\u003e2016 to 2020 F32 F33 F36 B38 418i\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\u003e2017+ G30 B58 540i 540iX\u003c\/li\u003e\n    \u003cli\u003e2017+ G30 B46 B48 530i 530iX 530e\u003c\/li\u003e\n    \u003cli\u003e2017+ G31 B58 540i 540iX\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBMW 6 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2018+ G32 G33 B48 B58 630i 640i 640iX\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBMW 7 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2016+ G11 G12 730i 730iX\u003c\/li\u003e\n    \u003cli\u003e2016+ G11 G12 B58 740i 740iX\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBMW 8 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2019+ G14 G15 G16 B58 840i 840iX Gran Coupe\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\u003e2016+ B46 B48 X1\u003c\/li\u003e\n    \u003cli\u003e2018+ B46 B48 X2\u003c\/li\u003e\n    \u003cli\u003e2018+ G01 B48 B58 X3 2.0i 3.0i M40i including xDrive and sDrive\u003c\/li\u003e\n    \u003cli\u003e2019+ G02 B48 B58 X4 2.0i 3.0i M40i including xDrive and sDrive\u003c\/li\u003e\n    \u003cli\u003e2019+ G05 B58 X5 40i 40iX\u003c\/li\u003e\n    \u003cli\u003e2021+ G05 X5 45e\u003c\/li\u003e\n    \u003cli\u003e2019+ G06 X6 40iX\u003c\/li\u003e\n    \u003cli\u003e2019+ G07 B58 X7 40i\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBMW Z4\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2019+ G29 B58 Z4 M40i\u003c\/li\u003e\n    \u003cli\u003e2019+ G29 B46 B48 Z4 30i and 20i\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003eWorks on most BMW models fitted with B48 and B58 engines even if not explicitly listed. Unsure about your car? Contact us and we will happily check for you.\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003ePerformance and compliance\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eJB4_B58 is CARB approved under Executive Order D-744-4 for 2016 to 2018 BMW 230i, 330i, 430i, 530i, 340i, 440i, 740i, M240i and X1 applications.\u003c\/li\u003e\n    \u003cli\u003eUse high quality fuel. Performance maps require 91 octane or better. Ethanol blend maps available where applicable.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003eInstallation and support\u003c\/h2\u003e\n  \u003cp\u003eQuick install using the model-specific harness with no coding. For professional fitting, book with MJ Modifications in Warwickshire. Email \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e for a fitting quote and availability.\u003c\/p\u003e\n  \n  \u003cp\u003eAdd the JB4 Mobile Bluetooth Connect Kit to pair with iOS or Android, or connect via the BMS Data Cable to a Windows laptop. Both options enable data logging, map changes and free firmware updates as new features are released. JB4 Mobile app purchase required for smartphone use.\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003eCompatibility check\u003c\/h2\u003e\n  \u003cp\u003eWe will confirm fitment prior to dispatch. Provide your UK registration number or the last 7 digits of your VIN at checkout and our team will run a compatibility check.\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003ePhotos and videos\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eJB4 Tuned M140i\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/ap6-3P0nt3g\" frameborder=\"0\" allow=\"autoplay; encrypted-media\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eHow to install LHD\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/aBZ9tVyx3Zc\" frameborder=\"0\" allow=\"autoplay; encrypted-media\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eJB4 B48 B58 CANFlap Exhaust Flapper Test\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/GjsUkTlBvD4\" frameborder=\"0\" allow=\"autoplay; encrypted-media\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eJB4 F Series OBDII CANbus Wheel Control Demo\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/6iLqHa2YFUM\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eJB4 Bluetooth Phone Logging Demo\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/tqNWgq47A1s\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003eMore information\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Burger Motorsports\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 5 year BMS repair warranty\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e F-B46B48B58-JB4\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch2\u003eBuy with confidence from MJ Modifications\u003c\/h2\u003e\n  \u003cp\u003eWe are BMW tuning specialists and long-time users of the JB4 system. Customers consistently report stronger mid-range torque, quicker real-world acceleration and effortless overtakes on M140i, M240i, 340i, 440i, 220i, 230i, 320i, 330i, 330e and more. Order today to transform your BMW with a safe, configurable and app-controlled performance upgrade.\u003c\/p\u003e\n  \n\u003c\/div\u003e","brand":"BMS","offers":[{"title":"Default Title","offer_id":55975034388866,"sku":null,"price":627.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/burger_motorsports_jb4_Gen3B-500x247.jpg?v=1763318614","url":"https:\/\/mjmodifications.co.uk\/products\/bms-bmw-f-chassis-b46-b48-b58-jb4-220i-240i-320i-330i-340i-420i-440i-x1","provider":"MJ Modifications","version":"1.0","type":"link"}