{"product_id":"renntech-ecu-plus-upgrade-2021-2026-mercedes-maybach-gls-600-x167","title":"RennTech ECU+ Upgrade 2021-2026 Mercedes-Maybach GLS 600 X167","description":"\u003cp\u003eThe 2021-2026 Mercedes-Maybach GLS 600 responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This ECU+ Upgrade rewrites ignition timing, throttle mapping, fueling and boost control on the 4.0L M177 twin-turbo V8, so the extra power arrives across the whole rev range without giving up everyday drivability. RennTech rates the car at 622 hp and 627 lb-ft with this upgrade. That is a gain of 63 hp and 49 lb-ft.\u003c\/p\u003e\u003ch3\u003eKey details\u003c\/h3\u003e\n\u003cp\u003eRated at up to 622 hp and 627 lb-ft, a gain of 63 hp and 49 lb-ft. The hand-held tuner stores both the RennTech calibration and your car's original file, connects at the OBD2 port and writes whichever one you pick to the ECU, so the ECU never has to come out of the car.\u003c\/p\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.MM.GLS600\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\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\u003e622 hp \/ 627 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+63 hp \/ +49 lb-ft\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\"\u003eMercedes-Maybach GLS 600\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\"\u003e2021-2026\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-top:1px solid #fff\"\u003e4.0L M177 twin-turbo V8\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"RennTech","offers":[{"title":"Default Title","offer_id":68063998738583,"sku":"54.167.MM.GLS600","price":3724.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2641\/0682\/files\/renntech_hht_0026_200x200_7e6a6842-d2d0-468d-8dac-bd01f3ac7491.jpg?v=1792120708","url":"https:\/\/autotalent.com\/products\/renntech-ecu-plus-upgrade-2021-2026-mercedes-maybach-gls-600-x167","provider":"AutoTalent","version":"1.0","type":"link"}