{"product_id":"jb4-plug-and-play-performance-tuner-2023-mercedes-amg-c43-glc-amg","title":"JB4 Plug-and-Play Performance Tuner – 2023+ Mercedes-AMG C43 \u0026 GLC AMG","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch1\u003eJB4 Performance Tuner for 2023+ Mercedes-AMG C43 \u0026amp; GLC AMG 2.0L Hybrid\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eUnleash the true potential of your next-generation AMG.\u003c\/strong\u003e\u003cbr\u003eThe \u003cstrong\u003eJB4 Performance Tuner\u003c\/strong\u003e is the most advanced plug-and-play tuning solution available for the 2023+ Mercedes-AMG C43 and GLC AMG 2.0L hybrid platforms powered by the M139 engine. Designed to integrate seamlessly with your factory ECU, the JB4 delivers substantial horsepower and torque gains, sharper throttle response, and reduced turbo lag—while retaining factory smoothness and reliability.\u003c\/p\u003e\n\u003ch2\u003e🔥 Real-World Performance Gains\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e30–65 WHP gains\u003c\/strong\u003e on pump gas\u003c\/li\u003e\n\u003cli\u003eTurbo boost safely increased by approximately \u003cstrong\u003e3–6 PSI\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eNoticeable improvements in 0–60 and quarter-mile times\u003c\/li\u003e\n\u003cli\u003eEven higher gains possible with ethanol (E85) blends\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTiming and fueling are intelligently rescaled to support the increased boost, ensuring strong, consistent performance without sacrificing drivability.\u003c\/p\u003e\n\u003ch2\u003e🔌 True Plug \u0026amp; Play Installation\u003c\/h2\u003e\n\u003cp\u003eThe JB4 installs in minutes using two easy-to-access connections on top of the engine. No cutting, splicing, or permanent modifications are required.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompletely reversible in seconds\u003c\/li\u003e\n\u003cli\u003eCompatible with all factory driving modes\u003c\/li\u003e\n\u003cli\u003eRuns as smoothly as stock\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🧠 Advanced CANbus Integration\u003c\/h2\u003e\n\u003cp\u003eUnlike basic two-channel tuning devices, the JB4 features full \u003cstrong\u003eCANbus OBDII integration\u003c\/strong\u003e, allowing it to monitor real-time engine data and make intelligent tuning adjustments.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSmoother, safer, and more powerful performance\u003c\/li\u003e\n\u003cli\u003eImproved drivability over non-integrated chip tunes\u003c\/li\u003e\n\u003cli\u003eFuel and spark control for reliable high-output operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📱 Smartphone Connectivity \u0026amp; Datalogging\u003c\/h2\u003e\n\u003cp\u003ePair your JB4 with a compatible Bluetooth adapter to unlock full wireless control via your iOS or Android device.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSwitch performance maps on the fly\u003c\/li\u003e\n\u003cli\u003eView and log up to 40 engine parameters in real time\u003c\/li\u003e\n\u003cli\u003eRead and delete diagnostic fault codes\u003c\/li\u003e\n\u003cli\u003eUpdate firmware as new maps and features are released\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eJB4 Mobile app sold separately ($29). Bluetooth adapter required.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003e🏁 JB4 Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUp to 8 preloaded tuning maps\u003c\/li\u003e\n\u003cli\u003eEthanol (E85) compatible maps\u003c\/li\u003e\n\u003cli\u003eUser-adjustable boost-by-gear (1st, 2nd, and 3rd)\u003c\/li\u003e\n\u003cli\u003eFuel economy unchanged during normal driving\u003c\/li\u003e\n\u003cli\u003e91 octane or higher recommended\u003c\/li\u003e\n\u003cli\u003eNot VIN-locked – transferable or resellable\u003c\/li\u003e\n\u003cli\u003eRemovable with no trace\u003c\/li\u003e\n\u003cli\u003eRugged billet aluminum enclosure\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFree USA Shipping\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e5-Year Manufacturer Warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🚗 Vehicle Fitment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2023+ Mercedes-AMG C43 2.0L Turbo Mild Hybrid (M139)\u003c\/li\u003e\n\u003cli\u003e2023+ Mercedes-AMG GLC AMG 2.0L Turbo Hybrid (M139)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e❓ What Is a JB4?\u003c\/h2\u003e\n\u003cp\u003eThe JB4 is an advanced plug-and-play tuning system for turbocharged vehicles. It installs between your engine sensors and ECU, intelligently increasing boost while monitoring critical engine data through CANbus for unmatched performance and safety.\u003c\/p\u003e\n\u003cp\u003eOften imitated but never duplicated, the JB4 has been the gold standard in plug-and-play turbo tuning for over a decade and is trusted by enthusiasts in more than 67 countries worldwide.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"Default Title","offer_id":46515015221423,"sku":null,"price":699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/mercedes-benz-c-class-tuner-C63-jb4-_2_540x_a224e5f8-150c-4196-80db-4783e484bd18.webp?v=1769379715","url":"https:\/\/benzunitedparts.com\/products\/jb4-plug-and-play-performance-tuner-2023-mercedes-amg-c43-glc-amg","provider":"BenzUnited Parts","version":"1.0","type":"link"}