{"product_id":"mclaren-jb4-performance-tuner-for-m838t-engines","title":"McLaren JB4 Performance Tuner for M838T Engines (BETA)","description":"\u003ch3\u003eInstant Horsepower and Torque Gains\u003c\/h3\u003e \u003cp\u003eThe JB4 is a plug and play McLaren tuner that plugs into easy to access sensors in the engine bay and works with your factory ECU tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. It features a 64mhz processor allowing sensors to be sampled 800 times per second using dedicated 10-bit digital to analog converters, ensuring smooth and powerful performance.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eNo ECU flash needed and compatible with locked 🔒 ECUs\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp class=\"bodytype\"\u003eUnlike other tuning systems, the JB4 includes a fully programmable CANbus system, upgradable firmware, and data logging capability. CANbus allows the JB4 to take into account pedal input, throttle position, gear, engine speed, air\/fuel ratio, fuel trims, ignition advance, knock, and many other factors and incorporate those into the performance mapping. It can also read\/delete fault codes, includes unique safety features such as keeping boost pressure low until oil and water is up to temperature to provide proper engine and turbo lucubration and drop to a low boost map if the engine starts to overheat, run lean, excessively knock, or over boost.\u003c\/p\u003e \u003cp class=\"bodytype\"\u003e\u003cspan\u003eThe JB4 offers a lot more performance, functionality, and safety than your average performance chip.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003eThe default JB4 map1 runs 4psi over stock peak and tuned maps including stock and valet mode can be selected on the fly using a BMS diagnostics cable or JB4 mobile smartphone adapter. \u003cbr\u003e\u003cbr\u003eInstallation is very discrete, and it quickly removes without a trace when needed. Includes maps for 91 octane, 93 octane, and E85 (ethanol fuel) mixtures. Fuel economy during normal driving is unchanged. Compatible with all driving modes. Made in USA. 5 year warranty.\u003c\/p\u003e \u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/JB4-PRO-APP-FREE_1024x1024.jpg?v=1760906303\"\u003e\u003c\/div\u003e \u003cp\u003e\u003cb\u003eWirelessly Connect to your JB4: \u003c\/b\u003eOur all-new \u003cstrong\u003eJB4 PRO\u003c\/strong\u003e smartphone connection is included and wirelessly connects the JB4 BMW 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. F\u003cspan\u003eor more info on how to use the JB4PRO free app\u003c\/span\u003e \u003ca data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/www.jb4tech.com\/forum\/model-specific-engine-tuning-modification-discussion\/jb4pro-free-app\/851437-what-is-the-jb4pro-free-app%23post851437\u0026amp;source=gmail\u0026amp;ust=1760993156171000\u0026amp;usg=AOvVaw0tdflC25-hxc3fH-Sbly4i\" 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\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e \u003cp class=\"bodytype\"\u003e\u003cstrong\u003eMcLaren JB4 Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e \u003cp class=\"bodytype\"\u003e• Improves 0-60 times and 1\/4 mile times\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e• Improves 0-60 and quarter mile times.\u003cbr\u003e• Includes multiple tuning maps for different fuel types.\u003cbr\u003e• Quick plug and play installation.\u003cbr\u003e• Supports E85 ethanol blends.\u003cbr\u003e• Reads and deletes fault codes.\u003cbr\u003e• Displays and logs up to 40 engine parameters.\u003cbr\u003e• Boost by gear control for improved traction.\u003cbr\u003e• Controls exhaust flap operation on supported vehicles.\u003cbr\u003e• Compatible with the free JB4PRO app.\u003cbr\u003e• Offers better performance and safety than basic chip tunes.\u003cbr\u003e• Full CANbus integration.\u003cbr\u003e• Runs as smoothly as stock.\u003cbr\u003e• Compatible with all driving modes.\u003cbr\u003e• No impact on fuel economy during normal driving.\u003cbr\u003e• Requires 91 octane or better for performance gains.\u003cbr\u003e• Not VIN locked and fully removable.\u003cbr\u003e• Includes billet aluminum enclosure.\u003cbr\u003e• Designed and assembled in the USA.\u003cbr\u003e• 5-year warranty.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"bodytype\"\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e \u003cp class=\"bodytype\"\u003e\u003cstrong\u003eMcLaren\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e• all M838T engine variants, McLaren MP412C,570s,570GT,600LT,650S, and more.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"bodytype\"\u003e\u003cstrong\u003eWhat is a JB4?\u003c\/strong\u003e \u003cbr\u003eThe 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 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 and is sold in over 67 countries worldwide.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan class=\"s1\"\u003e\u003cspan\u003e\u003cstrong\u003eIs the JB4 a real tune?\u003cbr\u003e\u003c\/strong\u003e\u003cbr\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\/span\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp class=\"bodytype\"\u003e\u003cspan\u003e\u003cu\u003e\u003ca href=\"https:\/\/burgertuning.com\/pages\/faq\"\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\/a\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e \u003ch3 class=\"bodytype\"\u003e \u003ca href=\"https:\/\/jb4tuned.com\/instructions\/McLaren_JB4_Install.pdf\"\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/Download-the-install-guide-2020-1.svg\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e\u003c\/span\u003e \u003c\/h3\u003e \u003ch3 class=\"bodytype\"\u003e\u003cspan\u003eDragy Results\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/IMG-8864_600x600.png?v=1614628368\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/h3\u003e \u003cp class=\"bodytype\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/IMG-8118_1024x1024.jpg?v=1614629104\" alt=\"McLaren Performance Tuner Chip Jb4\"\u003e\u003c\/p\u003e \u003cp class=\"bodytype\"\u003e\u003cimg alt=\"Mclaren JB4 Performance Tuner Chip\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/2048\/files\/IMG-8117_1024x1024.jpg?v=1614629146\"\u003e\u003c\/p\u003e","brand":"Burger Motorsports","offers":[{"title":"Default Title","offer_id":43095200202961,"sku":"McLaren JB4 + PRO Adapter","price":1958.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0571\/1334\/6257\/files\/jb4-tuner-00006_8007726b-6e8a-404a-8179-331386a81e55.jpg?v=1778789322","url":"https:\/\/speedfactorracing.com\/products\/mclaren-jb4-performance-tuner-for-m838t-engines","provider":"Speed Factor","version":"1.0","type":"link"}