{"product_id":"w205-c43-amg-stage-2-bundle-catless-downpipes-custom-ecu-tune","title":"C43 AMG Stage 2 Bundle | Catless Downpipes + ECU Calibration (W205)","description":"\u003cdiv style=\"font-family: Arial, sans-serif; line-height: 1.65; color: #222; max-width: 880px; margin: 0 auto; padding: 16px;\"\u003e\n\u003c!-- Headline --\u003e\n\u003cp style=\"font-size: 16px; margin-bottom: 20px;\"\u003eTake your W205 C43 AMG to the next level with this complete Stage 2 package. It combines high-flow catless downpipes with our custom remote ECU calibration, delivering strong power gains, sharper throttle response, and a deeper AMG exhaust note while keeping the car refined and reliable for daily driving.\u003c\/p\u003e\n\u003c!-- What's Included --\u003e\n\u003ch3 style=\"font-size: 19px; margin: 28px 0 12px; border-bottom: 2px solid #eee; padding-bottom: 6px;\"\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding-left: 0; margin: 0 0 24px; font-size: 15.5px;\"\u003e\n\u003cli style=\"margin-bottom: 9px;\"\u003e✓ \u003cstrong\u003eCatless Downpipes\u003c\/strong\u003e in T304 stainless steel (direct bolt-on)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 9px;\"\u003e✓ \u003cstrong\u003eCustom Remote ECU Calibration\u003c\/strong\u003e with full CEL resolution and multi-map support\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 9px;\"\u003e✓ \u003cstrong\u003ePremium OBD2 Interface\u003c\/strong\u003e for easy home flashing\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 9px;\"\u003e✓ Detailed installation guide + dedicated post-tune support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Performance --\u003e\n\u003ch3 style=\"font-size: 19px; margin: 28px 0 12px; border-bottom: 2px solid #eee; padding-bottom: 6px;\"\u003ePerformance\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding-left: 0; margin: 0 0 20px; font-size: 15.5px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 2 Output:\u003c\/strong\u003e Up to \u003cstrong\u003e485 hp \/ 530 lb-ft\u003c\/strong\u003e on premium pump gas\u003c\/li\u003e\n\u003cli\u003eSignificantly faster turbo spool and sharper throttle response\u003c\/li\u003e\n\u003cli\u003eDeeper, more aggressive AMG exhaust note under load\u003c\/li\u003e\n\u003cli\u003eProven reliability on both street and track use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Video --\u003e\n\u003cdiv style=\"margin: 28px 0; text-align: center;\"\u003e\n\u003cp style=\"margin-bottom: 10px; font-style: italic; color: #444;\"\u003eWatch our Stage 2 C43 go head-to-head with a modified Nissan GT-R:\u003c\/p\u003e\n\u003ciframe title=\"C43 AMG Stage 2 vs Modified Nissan GT-R\" src=\"https:\/\/www.youtube.com\/embed\/vHrlMiZ1BTU\" style=\"max-width: 720px; border-radius: 8px;\" height=\"400\" width=\"100%\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\u003c!-- Downpipe Options --\u003e\n\u003ch3 style=\"font-size: 19px; margin: 28px 0 12px; border-bottom: 2px solid #eee; padding-bottom: 6px;\"\u003eChoose Your Downpipe Finish\u003c\/h3\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; margin-bottom: 20px;\"\u003e\n\u003cdiv style=\"background: #f9f9f9; padding: 14px 16px; border-radius: 8px; border: 1px solid #ddd;\"\u003e\n\u003cstrong\u003eCeramic Coated\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 14.5px; color: #444;\"\u003eBest heat management. Reduces under-hood temps by 100–200°F and gives a premium finished look.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f9f9f9; padding: 14px 16px; border-radius: 8px; border: 1px solid #ddd;\"\u003e\n\u003cstrong\u003eHeat Shielded\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 14.5px; color: #444;\"\u003eMaximum thermal protection + fastest turbo spool. Ideal for track or hot climate use.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f9f9f9; padding: 14px 16px; border-radius: 8px; border: 1px solid #ddd;\"\u003e\n\u003cstrong\u003eRaw Stainless\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 14.5px; color: #444;\"\u003eClassic raw look with excellent durability. Great value and easy to maintain.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-weight: bold; color: #b22222; text-align: center; margin-bottom: 28px;\"\u003eUse the variant selector above to choose your preferred downpipe finish.\u003c\/p\u003e\n\u003c!-- Compatibility --\u003e\n\u003ch3 style=\"font-size: 19px; margin: 28px 0 12px; border-bottom: 2px solid #eee; padding-bottom: 6px;\"\u003eVehicle Compatibility\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14.5px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f1f1f1;\"\u003e\n\u003cth style=\"padding: 9px 10px; border: 1px solid #ccc; text-align: left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 9px 10px; border: 1px solid #ccc; text-align: left;\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"padding: 9px 10px; border: 1px solid #ccc; text-align: left;\"\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003eC43 AMG\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003eW205\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003e2015–2021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003eC400 \/ C450\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003eW205\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003e2015–2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003eE43 AMG\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003eW213\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003e2016–2018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003eE400 \/ E450\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003eW213 \/ C238 \/ A238\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #ccc;\"\u003e2016–2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- FAQ --\u003e\n\u003ch3 style=\"font-size: 19px; margin: 32px 0 12px; border-bottom: 2px solid #eee; padding-bottom: 6px;\"\u003eCommon Questions\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding-left: 0; margin: 0 0 20px; font-size: 15px;\"\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eHow does the remote calibration work?\u003c\/strong\u003e\u003cbr\u003eWe guide you through the process step-by-step. You connect the interface and we remotely flash the car (usually under 45 minutes).\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eWill it throw a check engine light?\u003c\/strong\u003e\u003cbr\u003eNo. Our custom calibration is specifically written to eliminate CELs with catless downpipes.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eIs daily drivability affected?\u003c\/strong\u003e\u003cbr\u003eNo — the car retains its refined character with improved performance and response.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eIs this street legal?\u003c\/strong\u003e\u003cbr\u003eNo. This package is intended for off-road and competition use only.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Footer --\u003e\n\u003cdiv style=\"margin-top: 40px; padding-top: 20px; border-top: 1px solid #ddd; text-align: center; font-size: 13px; color: #666;\"\u003e\n\u003cp\u003e\u003cstrong\u003e12-month warranty\u003c\/strong\u003e • Same-day U.S. shipping • Dedicated post-purchase support\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"Raw Stainless","offer_id":46690950676655,"sku":null,"price":2000.0,"currency_code":"USD","in_stock":true},{"title":"Ceramic Coated","offer_id":46690950709423,"sku":null,"price":2000.0,"currency_code":"USD","in_stock":true},{"title":"Heat Shielded","offer_id":46690950742191,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/m276-ecu-tune-485hp-530tq-mercedes-c43-e43-glc43.png?v=1773973730","url":"https:\/\/benzunitedparts.com\/products\/w205-c43-amg-stage-2-bundle-catless-downpipes-custom-ecu-tune","provider":"BenzUnited Parts","version":"1.0","type":"link"}