{"product_id":"renntech-ecu-plus-upgrade-2021-2023-mercedes-amg-gls-63-x167","title":"RennTech ECU+ Upgrade 2021-2023 Mercedes-AMG GLS 63 X167","description":"\u003cp\u003eIf you want more from the 2021-2023 GLS 63 AMG without touching the hardware, this RennTech ECU+ Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 4.0L M177 twin-turbo V8 EQ Boost, raising power and torque through the full band and keeping the smooth manners the car left the factory with. RennTech rates the car at 745 hp and 767 lb-ft with this upgrade. That is a gain of 97 hp and 54 lb-ft.\u003c\/p\u003e\u003ch3\u003eKey details\u003c\/h3\u003e\n\u003cp\u003eRated at up to 745 hp and 767 lb-ft, gains of 97 hp and 54 lb-ft. The tuner holds your stock file alongside the RennTech file, plugs into the OBD2 port, and flashes whichever one you choose without pulling the ECU.\u003c\/p\u003e\u003ch3\u003eWatch it explained\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:8px 0 16px\"\u003e\u003ciframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/dGTikm51Bd4\" title=\"RennTech product video\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allow=\"accelerometer; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRevised ignition timing, throttle mapping, air-fuel ratios and boost control\u003c\/li\u003e\n\u003cli\u003eGains across the entire rev range, not just at peak\u003c\/li\u003e\n\u003cli\u003eDeveloped on RennTech's own dyno and road tested\u003c\/li\u003e\n\u003cli\u003eKeeps factory-like drivability and reliability for daily use\u003c\/li\u003e\n\u003cli\u003e93 octane or better recommended for the full calibration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat is included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRennTech calibration for your car\u003c\/li\u003e\n\u003cli\u003eDelivery as listed by RennTech for this model (HHT tuner or ECU flash)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecs\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 12px 4px 0\"\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e54.167.GLS63EQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 12px 4px 0\"\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.0L M177 twin-turbo V8 EQ Boost\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 12px 4px 0\"\u003e\u003cstrong\u003eRated output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e745 hp \/ 767 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 12px 4px 0\"\u003e\u003cstrong\u003eGain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+97 hp \/ +54 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 12px 4px 0\"\u003e\u003cstrong\u003eShipping weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eFitment notes\u003c\/h3\u003e\u003cp\u003eFitment is as listed by RennTech for this part number. Your VIN is required with the order.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:12px\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#03589c;color:#fff\"\u003e\n\u003cth style=\"padding:8px;text-align:left\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding:8px;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:8px;text-align:left\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"padding:8px;text-align:left\"\u003eYear\u003c\/th\u003e\n\u003cth style=\"padding:8px;text-align:left\"\u003eEngine\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr style=\"background:#e8f4f8\"\u003e\n\u003ctd style=\"padding:8px;border-top:1px solid #fff\"\u003eMercedes-Benz\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-top:1px solid #fff\"\u003eGLS 63 AMG\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-top:1px solid #fff\"\u003eX167\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-top:1px solid #fff\"\u003e2021-2023\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-top:1px solid #fff\"\u003e4.0L M177 twin-turbo V8 EQ Boost\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"RennTech","offers":[{"title":"Default Title","offer_id":68064000999575,"sku":"54.167.GLS63EQ","price":3724.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2641\/0682\/files\/renntech_hht_002_f3a4252f-ee34-4454-a5dc-9a52e0540995.jpg?v=1792120754","url":"https:\/\/autotalent.com\/products\/renntech-ecu-plus-upgrade-2021-2023-mercedes-amg-gls-63-x167","provider":"AutoTalent","version":"1.0","type":"link"}