{"product_id":"bmw-e-series-n55-jb4-135i-and-335i","title":"Burger Motorsports (BMS) JB4 Tuning Box for BMW N55 E-Series (E82 E88 E90 E91 E92 E93 E84 E70 E71) - 135i 335i X1 X5 X6 - Plug \u0026 Play Piggyback ECU","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \n  \u003ch2\u003eJB4 Performance Module for BMW N55 E-Chassis 135i 335i X1 X5 X6\u003c\/h2\u003e\n  \n  \u003cp\u003e\n    Instantly wake up your turbocharged N55 with the Burger Motorsports JB4 performance module. This simple plug-in engine control add-on delivers huge real-world gains with factory-like drivability, seamless CAN integration and industry-leading safeguards. On a standard vehicle you can see up to 60 hp and 60 lb ft at the wheels, and with supporting hardware the platform is capable of around 100 whp increases, all while retaining smooth OEM manners.\n  \u003c\/p\u003e\n  \n  \u003cp\u003e\n    We run JB4 on our own cars and have installed it for countless happy customers. The difference is immediate: sharper response, harder midrange pull and repeatable acceleration run after run. If you are searching for a BMW N55 power upgrade without permanent ECU flashing, this is the proven route to faster 0 to 60 and a stronger standing quarter.\n  \u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eKey reasons enthusiasts choose JB4\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eUp to 60 hp and 60 lb ft at the wheels on an otherwise stock setup\u003c\/li\u003e\n    \u003cli\u003eUp to 100 whp potential on cars with supporting modifications\u003c\/li\u003e\n    \u003cli\u003eIn-car map switching and optional in-dash gauge hijack for boost and key data\u003c\/li\u003e\n    \u003cli\u003eOBD CAN connectivity for advanced control, safety and code reading or clearing\u003c\/li\u003e\n    \u003cli\u003eEthanol blend and progressive water meth compatibility\u003c\/li\u003e\n    \u003cli\u003eNo cutting or splicing, fully reversible and not VIN locked\u003c\/li\u003e\n    \u003cli\u003eRuns as smoothly as stock in every drive mode with economy unchanged in normal use\u003c\/li\u003e\n    \u003cli\u003eOptional JB4 Mobile app via Bluetooth or laptop cable for logging, updates and tweaks\u003c\/li\u003e\n    \u003cli\u003ePremium unleaded recommended for best results\u003c\/li\u003e\n    \u003cli\u003eRugged billet aluminium enclosure, made in the USA, 5 year BMS repair warranty\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003e\n    Looking for a flash tune alternative, ECU upgrade, chip tuning or a BMW power box for your N55 straight-six turbo? JB4 is the benchmark.\n  \u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eVehicle compatibility\u003c\/h3\u003e\n  \u003cp\u003eBMW 1 Series\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2010 to 2013 E82 E88 135i with N55\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eBMW 3 Series\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2010 onward E90 E91 E92 E93 335i and 335ix with N55\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eBMW X models\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2011 onward E84 X1 with N55\u003c\/li\u003e\n    \u003cli\u003e2011 to 2013 E70 X5 35i and 35ix with N55\u003c\/li\u003e\n    \u003cli\u003e2011 to 2013 E71 X6 35i and 35ix with N55\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eHarness selection A or B\u003c\/h3\u003e\n  \u003cp\u003e\n    Your N55 may require Harness A or Harness B. Use the guide below to identify the correct option for your car or contact us for assistance.\n  \u003c\/p\u003e\n  \u003cp style=\"text-align:center;\"\u003e\n    \u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/1272\/9301\/files\/Captura_de_pantalla_2019-08-30_a_las_10.31.34_1024x1024.png?v=1567157572\" alt=\"JB4 harness A or B identification guide for BMW N55\"\u003e\n  \u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eWhat you get\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eE-chassis N55 JB4 control unit in billet aluminium housing\u003c\/li\u003e\n    \u003cli\u003eModel specific JB4 wiring loom\u003c\/li\u003e\n    \u003cli\u003eRight-hand-drive extension harness upgrade\u003c\/li\u003e\n    \u003cli\u003eBMS Data Cable if selected\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBMS Data Cable\u003c\/strong\u003e for laptop connectivity, data logging and firmware updates\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBluetooth Connect Kit\u003c\/strong\u003e for JB4 Mobile app control and wireless logging\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eInstallation and fitting\u003c\/h3\u003e\n  \u003cp\u003e\n    Straightforward plug-in installation with no permanent changes to the vehicle. Most owners fit at home with basic tools using the official guide.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Prefer professional fitting and setup? MJ Modifications offers expert installation in Warwickshire. Email \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e for a quote and availability.\n  \u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eCompatibility check before dispatch\u003c\/h3\u003e\n  \u003cp\u003e\n    We validate compatibility before shipping. Add your UK registration number or the last 7 characters of your VIN at checkout so we can confirm the correct harness and configuration.\n  \u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003ePart numbers\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eE-N55-JB4-A  Harness A\u003c\/li\u003e\n    \u003cli\u003eE-N55-JB4-B  Harness B\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eWarranty and manufacturer\u003c\/h3\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  \n  \u003chr\u003e\n  \n  \u003ch3\u003eDimensions and weight\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eE-N55-JB4-B approximate dimensions: 26 x 16 x 6 cm\u003c\/li\u003e\n    \u003cli\u003eE-N55-JB4-B approximate weight: 525 g\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eDyno and videos\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eJB4 Optional Phone Software\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/tqNWgq47A1s\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\n  \u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eJB4 135i 335i Steering Wheel Controls Demo Video\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/HDjD4OcDIGU\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\n  \u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eJB4 Optional In Dash Boost Gauge and Shift Light Demo\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ciframe width=\"420\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/fBv40XoMFnw\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\n  \u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eJB4 Optional Startup Gauge Sweep\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/NNr8ovwt8Lc\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\n  \u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eSearch phrases our buyers use\u003c\/h3\u003e\n  \u003cp\u003e\n    BMW N55 performance module, BMW 135i power upgrade UK, E92 335i tuning module, E82 135i chip tuning, 335ix power box, E84 X1 N55 upgrade, E70 X5 35i tuning kit, E71 X6 35i upgrade, JB4 UK supplier, JB4 E chassis N55, Burger Motorsports controller, piggyback tuner for N55, ECU upgrade without remap, flash tune alternative, BMW code reader and logger, OBD CAN integration, ethanol E85 blend support, water meth ready, right hand drive compatible loom, billet aluminium case, made in USA, 5 year warranty, Warwickshire fitting, MJ Modifications installation.\n  \u003c\/p\u003e\n  \n\u003c\/div\u003e","brand":"BMS","offers":[{"title":"Harness Type A 2011 and some 2012","offer_id":55975044678018,"sku":null,"price":523.64,"currency_code":"GBP","in_stock":true},{"title":"Harness Type B 2012+","offer_id":55975044710786,"sku":null,"price":523.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/BMW_E_Series_N55_JB4_135i_and_335i_Performance_Tuner_1946x_e108db89-e446-4d28-a7ef-a6b59092571c.jpg?v=1763318770","url":"https:\/\/mjmodifications.co.uk\/products\/bmw-e-series-n55-jb4-135i-and-335i","provider":"MJ Modifications","version":"1.0","type":"link"}