{"product_id":"jb4-tuner-for-e450-e53-gle53-gt53-50-100hp-plug-play-tune","title":"JB4 Tuner for 2021+ Mercedes E450, E580, E53 AMG, GLE53 AMG \u0026 2020+ AMG GT43 \/ GT53","description":"\u003cdiv style=\"font-family: Arial, sans-serif; background-color: #f2f2f2; padding: 20px; line-height: 1.6; color: #333; max-width: 1000px; margin: 0 auto;\"\u003e\n\u003c!-- Title --\u003e\n\u003cp style=\"font-size: 16.5px; margin-bottom: 20px;\"\u003eUnlock hidden performance in your Mercedes-Benz with the \u003cstrong\u003eJB4 Piggyback Tuner\u003c\/strong\u003e. This advanced system integrates with your factory ECU to deliver \u003cstrong\u003eup to 50–100HP gains\u003c\/strong\u003e, sharper throttle response, and reduced turbo lag — all while remaining fully removable with no ECU flash required.\u003c\/p\u003e\n\u003c!-- Highlighted Benefits --\u003e\n\u003cdiv style=\"background: #f5f5f5; padding: 12px 15px; border-left: 4px solid #cc0000; margin: 20px 0;\"\u003e\n\u003cstrong\u003e✅ Key Advantages:\u003c\/strong\u003e\n\u003cul style=\"margin: 8px 0 0 18px;\"\u003e\n\u003cli\u003eDyno-proven +50–100HP depending on fuel and map\u003c\/li\u003e\n\u003cli\u003eCompletely plug \u0026amp; play — installs in under an hour\u003c\/li\u003e\n\u003cli\u003eUses CANbus for real-time tuning and safety monitoring\u003c\/li\u003e\n\u003cli\u003eNo ECU flash — fully removable with no trace\u003c\/li\u003e\n\u003cli\u003eFuel economy remains unchanged during daily driving\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Performance Features --\u003e\n\u003ch3 style=\"font-size: 18px; font-weight: 600; margin-top: 20px;\"\u003ePerformance Features\u003c\/h3\u003e\n\u003cul style=\"margin-left: 18px;\"\u003e\n\u003cli\u003e8 selectable maps: 91\/93 octane, E85 blend, Race Gas, Valet Mode, Stock\u003c\/li\u003e\n\u003cli\u003eBoost-by-gear for improved traction and launches\u003c\/li\u003e\n\u003cli\u003eReads \u0026amp; deletes fault codes directly from the JB4 app\u003c\/li\u003e\n\u003cli\u003eReal-time data: boost, AFR, timing, throttle, IATs, fuel trims \u0026amp; more\u003c\/li\u003e\n\u003cli\u003eFive-year warranty — made in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Compatibility Table --\u003e\n\u003ch3 style=\"font-size: 18px; font-weight: 600; margin-top: 25px;\"\u003eVehicle Compatibility\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 10px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #ececec; text-align: left;\"\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd;\"\u003eYear\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eE450 \/ E580\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e2021+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eE53 AMG\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e2021+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eGLE53 AMG\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e2021+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eAMG GT43 \/ GT53\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e2020+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- CTA Box --\u003e\n\u003cdiv style=\"background: #cc0000; color: #fff; padding: 15px; text-align: center; border-radius: 6px; margin: 25px 0;\"\u003e\n\u003cstrong\u003eWant wireless tuning?\u003c\/strong\u003e\u003cbr\u003eAdd the \u003cem\u003eJB4 Mobile Bluetooth Adapter\u003c\/em\u003e for app control, data logging, and map switching.\u003c\/div\u003e\n\u003cp style=\"font-style: italic; color: rgb(85, 85, 85); text-align: center;\"\u003eExperience how your AMG should have come from the factory — faster, smoother, and more responsive.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"No Add-on (Limited to Map 1)","offer_id":46193348378799,"sku":null,"price":595.0,"currency_code":"USD","in_stock":true},{"title":"JB4PRO Adapter (Use free JB4PRO app for IOS and Android)","offer_id":46193348411567,"sku":null,"price":658.0,"currency_code":"USD","in_stock":true},{"title":"JB4 Mobile adapter (Requires Paid app JB4PRO app for IOS and Android)","offer_id":46193348444335,"sku":null,"price":728.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/jb4-tuner-mercedes-e53-e450-gt43-main.webp?v=1762250755","url":"https:\/\/benzunitedparts.com\/products\/jb4-tuner-for-e450-e53-gle53-gt53-50-100hp-plug-play-tune","provider":"BenzUnited Parts","version":"1.0","type":"link"}