{"product_id":"group-18-jb4-for-ea888-gen4-mk8-golf-r-audi-s3-8y-cupra-leon-formentor","title":"Group 18: JB4 for EA888 Gen4 for Mk8 Golf R, Audi S3 8Y, Cupra Leon\/Formentor","description":"\u003ch3\u003e \u003cspan style=\"color: rgb(255, 42, 0);\"\u003eJB4 \u003c\/span\u003eGroup 18: JB4 for EA888 Gen4 for Mk8 Golf R, Audi S3 8Y, Cupra Leon\/Formentor\u003c\/h3\u003e \u003cp\u003eThe JB4 is a true user adjustable plug and play solution. Power Gains: Starting at peak 370bhp and 380ft lb.\u003cspan class=\"im\"\u003e\u003cbr\u003e\u003cbr\u003eThe JB4 features CANbus connectivity for more advanced tuning, direct AFR control, advanced safety systems for boost, air\/fuel ratio, fuel trims, and engine knock, boost mapping by gear for improved traction, integrated water\/meth control, and much more. \u003cbr\u003e\u003cbr\u003eThe unit can be used with our JB4 Bluetooth Connect kit providing for full in-car engine parameter display, map switching, and adjustment.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eStored maps available for 91\/95ron and 93\/98ron for manual and DSG\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e \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=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e \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 \u003cp\u003eFor more information about the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJB4PRO mobile app\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\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\"\u003eclick here\u003c\/a\u003e.\u003c\/p\u003e \u003cdiv\u003e \u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e \u003c\/div\u003e \u003cp\u003e\u003cstrong\u003eJB4 Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e• Up to 75hp on a stock vehicle, 50hp\/65ft lbs on 91\/95ron and 65hp\/70ft lbs on 93\/98ron\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e• Improves 0-60 and quarter mile times.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Includes multiple tuning maps for different fuel types.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Quick plug and play installation.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Supports E85 ethanol blends.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Reads and deletes fault codes.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Displays and logs up to 40 engine parameters.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Boost by gear control for improved traction.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Controls exhaust flap operation on supported vehicles.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Compatible with the free JB4PRO app.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Offers better performance and safety than basic chip tunes.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Full CANbus integration.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Runs as smoothly as stock.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Compatible with all driving modes.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• No impact on fuel economy during normal driving.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Requires 91 octane or better for performance gains.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Not VIN locked and fully removable.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Includes billet aluminum enclosure.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Designed and assembled in the USA.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• 5-year warranty.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e\u003cb\u003eVehicle Fitment\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cb\u003eVolkswagen\u003c\/b\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cdiv\u003e• 2025+ Mk8.5 Golf R\u003c\/div\u003e \u003cdiv\u003e \u003cdiv data-smartmail=\"gmail_signature\" class=\"gmail_signature\" dir=\"ltr\"\u003e \u003cdiv dir=\"ltr\"\u003e \u003cdiv\u003e \u003cdiv dir=\"ltr\"\u003e \u003cdiv\u003e \u003cdiv dir=\"ltr\"\u003e \u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cp\u003e\u003cspan\u003e• 2021+ VW MK8 Golf R\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• 2021\u003cmeta charset=\"utf-8\"\u003e+ VW MK8 GTI Clubsport\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• 2021\u003cmeta charset=\"utf-8\"\u003e+ VW Tiguan R\u003cbr\u003e\u003c\/span\u003e• \u003cspan\u003e2022+ Arteon\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAudi\u003c\/b\u003e\u003cbr\u003e\u003cspan\u003e• 2021\u003cmeta charset=\"utf-8\"\u003e+ Audi S3 8Y\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• 2021+ Audi SQ2\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSeat\u003c\/b\u003e\u003cbr\u003e\u003cspan\u003e• 2021\u003cmeta charset=\"utf-8\"\u003e+ Seat Cupra Leon\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• 2021\u003cmeta charset=\"utf-8\"\u003e+ Seat Formentor\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e \u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eWhat is a JB4?\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"p2\"\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 the 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 and is sold in over 67 countries worldwide.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIs the JB4 a real tune?\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eYes 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\/span\u003e\u003c\/p\u003e \u003cp class=\"p2\"\u003e\u003cspan class=\"s1\"\u003e\u003cbr\u003e\u003c\/span\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 \u003ch2 class=\"bodytype\"\u003e\u003ca href=\"https:\/\/www.jb4tuned.com\/instructions\/Group-18-JB4-Install-Guide.pdf\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/Download-the-install-guide-2020-1.svg\"\u003e\u003c\/a\u003e\u003c\/h2\u003e \u003cdiv\u003e \u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003e2024 Golf R \u003cbr\u003e\u003c\/strong\u003e \u003c\/div\u003e \u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/golfr_dyno.png?v=1737079310\" alt=\"\"\u003e\u003c\/div\u003e","brand":"Burger Motorsports","offers":[{"title":"Default Title","offer_id":43095197155537,"sku":null,"price":880.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0571\/1334\/6257\/files\/jb4-tuner-tune-16_e79e20e2-160b-4833-a269-0c5114e245df.jpg?v=1778789179","url":"https:\/\/speedfactorracing.com\/products\/group-18-jb4-for-ea888-gen4-mk8-golf-r-audi-s3-8y-cupra-leon-formentor","provider":"Speed Factor","version":"1.0","type":"link"}