{"product_id":"stage-1-turbo-upgrade-mercedes-amg-gt-gts-gtc-gtr-r190-m178","title":"Stage 1 Turbo Upgrade for Mercedes-AMG GT \/ GT S \/ GT C \/ GT R (R190) – M178 4.0L BiTurbo","description":"\u003cdiv style=\"max-width:900px;margin:auto;font-family:Arial,sans-serif;color:#222;line-height:1.65;\"\u003e\n\u003cdiv style=\"background:#111;border-radius:12px;padding:16px 18px;margin-bottom:16px;\"\u003e\n\u003ch2 style=\"margin:0;text-align:center;color:#fff;font-size:20px;\"\u003eStage 1 Turbo Upgrade — Mercedes-AMG GT \/ GT S \/ GT C \/ GT R\u003c\/h2\u003e\n\u003cp style=\"margin:8px 0 0;text-align:center;color:#ffcc00;font-size:14px;\"\u003eR190 · M178 4.0L V8 BiTurbo • OEM BorgWarner rebuild • Stock-like drivability\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003eStage 1 Turbo Upgrade\u003c\/strong\u003e for the \u003cstrong\u003eMercedes-AMG GT (R190)\u003c\/strong\u003e is built for owners who want a serious jump in power without giving up reliability or daily drivability. Built on \u003cstrong\u003eOEM BorgWarner rebuild kits\u003c\/strong\u003e, it delivers substantial wheel horsepower and torque gains while keeping factory-like response.\u003c\/p\u003e\n\u003cp\u003eThis is not an oversized race turbo or an experimental setup. It is a refined, proven Stage 1 solution for the \u003cstrong\u003eM178 4.0L V8 BiTurbo\u003c\/strong\u003e — ideal for aggressive street cars, tuned weekend GTs, and owners building toward more later.\u003c\/p\u003e\n\u003cdiv style=\"background:#eef3fa;border:1px solid #cfe0ff;border-radius:10px;padding:14px;margin:16px 0;\"\u003e\n\u003cstrong\u003eCore Deposit:\u003c\/strong\u003e a core deposit is required for your stock turbochargers unless you send your factory turbos in advance. Sending cores in advance is the lower price — choose the option that suits you above.\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #e5e7eb;border-radius:12px;padding:14px;margin-bottom:16px;\"\u003e\n\u003ch3 style=\"margin:0 0 10px;font-size:16px;\"\u003eKey Benefits\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:18px;\"\u003e\n\u003cli\u003eSignificant wheel horsepower and torque gains over the factory turbos\u003c\/li\u003e\n\u003cli\u003eOEM BorgWarner internals for long-term reliability\u003c\/li\u003e\n\u003cli\u003eImproved airflow and boost efficiency without extreme lag\u003c\/li\u003e\n\u003cli\u003eRetains the AMG GT's factory character and drivability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #e5e7eb;border-radius:12px;padding:14px;margin-bottom:16px;\"\u003e\n\u003ch3 style=\"margin:0 0 10px;font-size:16px;\"\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:18px;\"\u003e\n\u003cli\u003eMercedes-AMG \u003cstrong\u003eGT\u003c\/strong\u003e (R190) — M178 4.0L V8 BiTurbo\u003c\/li\u003e\n\u003cli\u003eMercedes-AMG \u003cstrong\u003eGT S\u003c\/strong\u003e (R190) — M178 4.0L V8 BiTurbo\u003c\/li\u003e\n\u003cli\u003eMercedes-AMG \u003cstrong\u003eGT C\u003c\/strong\u003e (R190) — M178 4.0L V8 BiTurbo\u003c\/li\u003e\n\u003cli\u003eMercedes-AMG \u003cstrong\u003eGT R\u003c\/strong\u003e (R190) — M178 4.0L V8 BiTurbo\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin-top:10px;\"\u003eNot sure your car is covered? Send us your VIN and we will confirm before you order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff3cd;border:1px solid #ffe69c;border-radius:10px;padding:14px;margin-bottom:16px;\"\u003e\n\u003cstrong\u003eImportant Wastegate Notice:\u003c\/strong\u003e\u003cbr\u003eIf your turbochargers arrive with wastegates fitted, \u003cstrong\u003edo not use the supplied wastegate units\u003c\/strong\u003e — their condition and calibration are not guaranteed. Reuse your factory wastegates for known, reliable operation.\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #e5e7eb;border-radius:12px;padding:14px;margin-bottom:16px;\"\u003e\n\u003ch3 style=\"margin:0 0 10px;font-size:16px;\"\u003eWhat These Turbos Need\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 10px;\"\u003eTuning is required; the factory calibration has no strategy for these turbos. The rest controls heat and airflow so the turbos deliver what they are capable of.\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px;\"\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca style=\"color:#111;\" href=\"\/products\/mercedes-amg-gt-ecu-tune-m178\"\u003eCustom ECU tune\u003c\/a\u003e — required.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust:\u003c\/strong\u003e \u003ca style=\"color:#111;\" href=\"\/products\/m178-catless-downpipes-mercedes-amg-gt-gts-gtr-gtc\"\u003ecatless downpipes\u003c\/a\u003e — removes the main restriction after the turbos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling:\u003c\/strong\u003e \u003ca style=\"color:#111;\" href=\"\/products\/csf-8187-auxiliary-radiators-for-mercedes-amg-gt-gts-gtc-gtr-high-performance-cooling-upgrade\"\u003eCSF 8187 auxiliary radiators\u003c\/a\u003e and the \u003ca style=\"color:#111;\" href=\"\/products\/wagner-tuning-performance-intercooler-kit-for-mercedes-amg-gt-gts-gtc-gtr-m178-v8\"\u003eWagner intercooler kit\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake:\u003c\/strong\u003e \u003ca style=\"color:#111;\" href=\"\/products\/amg-gt-cold-air-intake-kit-m178-4-0l-v8-bi-turbo-gt-gtr-gts-upgrade-1\"\u003ecold air intake kit\u003c\/a\u003e or \u003ca style=\"color:#111;\" href=\"\/products\/bmc-panel-air-filter-set-amg-gt-gts-gtr-m178-high-flow\"\u003eBMC high-flow panel filters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost control:\u003c\/strong\u003e \u003ca style=\"color:#111;\" href=\"\/products\/gfb-dv-diverter-valve-mercedes-amg-gt-gts-gtc-gtr-m178-v8\"\u003eGFB DV+ diverter valve\u003c\/a\u003e and \u003ca style=\"color:#111;\" href=\"\/products\/vta-blow-off-valve-adapters-for-amg-gt-gts-gtc-gtr-r190\"\u003eVTA \/ BOV adapters\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align:center;margin-top:16px;\"\u003e\u003ca style=\"background:#111;color:#fff;padding:12px 24px;text-decoration:none;border-radius:8px;font-weight:bold;\" href=\"\/collections\/amg-gt-gts-gtr-gtc-performance-upgrades\"\u003eView the full AMG GT range\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eCore Return\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCore return required — remove your factory wastegate actuators before shipping\u003c\/li\u003e\n\u003cli\u003eThe core deposit is fully refunded once acceptable cores are received\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"color:#555;font-size:14px;\"\u003e\u003cstrong\u003eNeed help planning supporting mods?\u003c\/strong\u003e Send us your VIN and power target and we will map the build before you order.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"benzunited parts","offers":[{"title":"Send us the core in advance","offer_id":47282997166255,"sku":null,"price":3495.0,"currency_code":"USD","in_stock":true},{"title":"Pay a core deposit","offer_id":47283012665519,"sku":null,"price":5000.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/m177-stage-1-turbo-upgrade-c63-amg-gt-900hp_e7966bf4-f120-4c3d-a6c7-2653988c2ddc.jpg?v=1785465109","url":"https:\/\/benzunitedparts.com\/products\/stage-1-turbo-upgrade-mercedes-amg-gt-gts-gtc-gtr-r190-m178","provider":"BenzUnited Parts","version":"1.0","type":"link"}