{"product_id":"m274-stage-2-bundle-c300-e300-glc300","title":"C300 E300 GLC300 M274 Catless Downpipe + Stage 2 Tune Bundle | W205 W213 X253","description":"\u003cdiv style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif; line-height: 1.75; color: #222; max-width: 920px; margin: 0 auto; padding: 24px 20px;\"\u003e\n\u003cp style=\"font-size: 13px; color: #555; text-align: center; margin-bottom: 20px;\"\u003e\u003cstrong\u003eOff-road and competition use only\u003c\/strong\u003e in strict emissions areas. Professional install and dyno check advised. Gains vary by setup.\u003c\/p\u003e\n\n\u003cp style=\"font-size: 18px; font-weight: 600; color: #111; margin: 0 0 28px; text-align: center;\"\u003eEverything your C300, E300, or GLC300 needs to go Stage 2+ — in one order.\u003cbr\u003e\u003cspan style=\"font-weight: 400; font-size: 16px; color: #444;\"\u003eInstant throttle response, real mid-range torque, turbo whoosh and pops, and no check-engine light.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cdiv style=\"background: #f8f9fa; border-radius: 10px; padding: 18px 20px; margin-bottom: 32px; border: 1px solid #e0e0e0;\"\u003e\n\u003cp style=\"margin: 0 0 8px; font-weight: 700; font-size: 16px;\"\u003eWhy buy it as a package?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #444;\"\u003eFour parts that work together, with the calibration written around the exact hardware you're getting. The tune is matched to your downpipe, filter, and diverter valve from day one instead of paying for a re-flash later.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 21px; margin: 0 0 14px; color: #222;\"\u003eWhat's in the Bundle\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px; margin-bottom: 32px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #1a1a1a; color: #fff;\"\u003e\n\u003cth style=\"padding: 13px 14px; text-align: left; border: 1px solid #333;\"\u003eItem\u003c\/th\u003e\n\u003cth style=\"padding: 13px 14px; text-align: left; border: 1px solid #333;\"\u003eWhat it does\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCatless downpipe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003eT304 stainless, direct bolt-on — removes the biggest exhaust restriction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCustom remote ECU tune\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003eNo CEL, with 91 and 93 octane maps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eK\u0026amp;N high-flow air filter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003eWashable, reusable drop-in — frees up intake airflow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eGFB DV+ diverter valve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003eFaster, more consistent boost recovery between shifts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eOBD2-to-USB flashing cable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003eFlash from home, no shop visit needed for the tune\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eGuides and ongoing support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 13px 14px; border: 1px solid #ddd;\"\u003eInstallation instructions plus help from the people who wrote the calibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 style=\"font-size: 21px; margin: 0 0 14px; color: #222;\"\u003eWhat You'll Feel\u003c\/h2\u003e\n\u003cul style=\"padding-left: 22px; margin-bottom: 32px; line-height: 1.85; font-size: 16px;\"\u003e\n\u003cli\u003eUp to \u003cstrong\u003e320 hp \/ 340 lb-ft\u003c\/strong\u003e at the crank\u003c\/li\u003e\n\u003cli\u003eGains of \u003cstrong\u003e+45–80 hp and +60–100 lb-ft\u003c\/strong\u003e over stock\u003c\/li\u003e\n\u003cli\u003eSharper throttle response and noticeably faster spool\u003c\/li\u003e\n\u003cli\u003eDeeper exhaust note with low drone\u003c\/li\u003e\n\u003cli\u003eOptional pops and bangs on overrun\u003c\/li\u003e\n\u003cli\u003eHome flash in 30–60 minutes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 21px; margin: 0 0 14px; color: #222;\"\u003eFitment\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px; margin-bottom: 24px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #1a1a1a; color: #fff;\"\u003e\n\u003cth style=\"padding: 14px 16px; text-align: left; border: 1px solid #333;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 14px 16px; text-align: left; border: 1px solid #333;\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"padding: 14px 16px; text-align: left; border: 1px solid #333;\"\u003eYears\u003c\/th\u003e\n\u003cth style=\"padding: 14px 16px; text-align: left; border: 1px solid #333;\"\u003eEngine\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003eC300\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003eW205\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003e2015–2021\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003eM274 2.0T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003eE300\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003eW213\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003e2016–2021\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003eM274 2.0T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003eGLC300 \/ 4MATIC\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003eX253\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003e2016–2022\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #ddd;\"\u003eM274 2.0T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 15px; color: #444; margin-bottom: 36px;\"\u003eU.S.-spec M274 only — confirm your engine code and exhaust before ordering. \u003cstrong\u003eNot sure?\u003c\/strong\u003e \u003ca href=\"mailto:benzunitedparts@gmail.com?subject=C300%20M274%20Stage%202%20Bundle%20Fitment%20Check\" style=\"color: #b30000; font-weight: 600;\"\u003eSend us your VIN\u003c\/a\u003e and we'll confirm.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 21px; margin-bottom: 18px; color: #222;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 16px; border-bottom: 1px solid #eee; padding-bottom: 16px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer; font-size: 16px;\"\u003eHow does the remote tune work?\u003c\/summary\u003e\n\u003cp style=\"margin: 12px 0 0 24px; color: #444;\"\u003eYou connect the included OBD2 cable and we walk you through the flash — typically 30–60 minutes at home, no shop visit needed for the calibration itself.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 16px; border-bottom: 1px solid #eee; padding-bottom: 16px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer; font-size: 16px;\"\u003eWill I get a check engine light?\u003c\/summary\u003e\n\u003cp style=\"margin: 12px 0 0 24px; color: #444;\"\u003eNo. The calibration is written to resolve the fault codes a catless downpipe would otherwise set — that's a large part of why the package exists.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 16px; border-bottom: 1px solid #eee; padding-bottom: 16px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer; font-size: 16px;\"\u003eWhat does the DV+ actually do?\u003c\/summary\u003e\n\u003cp style=\"margin: 12px 0 0 24px; color: #444;\"\u003eThe factory diverter valve uses a rubber diaphragm that softens over time. The GFB DV+ replaces the internals with a machined piston assembly, so boost recovers faster and more consistently between shifts — especially useful once the downpipe and tune raise boost.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 16px; border-bottom: 1px solid #eee; padding-bottom: 16px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer; font-size: 16px;\"\u003eWhich octane maps are included?\u003c\/summary\u003e\n\u003cp style=\"margin: 12px 0 0 24px; color: #444;\"\u003eBoth 91 and 93. Higher octane lets us run more timing and boost safely, so gains are stronger on 93.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 16px; border-bottom: 1px solid #eee; padding-bottom: 16px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer; font-size: 16px;\"\u003eDoes it fit 4MATIC?\u003c\/summary\u003e\n\u003cp style=\"margin: 12px 0 0 24px; color: #444;\"\u003eYes for the GLC300 4MATIC (X253). For C300 and E300, confirm your exact configuration with us before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 32px; border-bottom: 1px solid #eee; padding-bottom: 16px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer; font-size: 16px;\"\u003eIs there a warranty?\u003c\/summary\u003e\n\u003cp style=\"margin: 12px 0 0 24px; color: #444;\"\u003eYes — a 12-month structural warranty on the downpipe, with guaranteed fitment on every model listed above.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2 style=\"font-size: 21px; margin: 0 0 14px; color: #222;\"\u003eBuy With Confidence\u003c\/h2\u003e\n\u003cul style=\"padding-left: 22px; margin-bottom: 32px; line-height: 1.85; font-size: 16px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-month structural warranty\u003c\/strong\u003e with guaranteed fitment on listed models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree U.S. shipping\u003c\/strong\u003e with tracking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOngoing support\u003c\/strong\u003e — the calibration is ours, so help comes from the people who wrote it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment confirmed before you buy\u003c\/strong\u003e — send your VIN and we'll verify\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-bottom: 36px;\"\u003e\u003ca href=\"mailto:benzunitedparts@gmail.com?subject=C300%20M274%20Stage%202%20Bundle%20Question\" style=\"color: #b30000; font-weight: 600;\"\u003eConfirm fitment or ask a question →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp style=\"text-align: center; font-size: 14px; color: #555; font-weight: 600; letter-spacing: 0.3px;\"\u003eBenzUnited Parts • M274 Stage 2+ Package • 12-Month Warranty • Ships Fast\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"Default Title","offer_id":46694164103343,"sku":null,"price":1450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/m274-stage-2-bundle-c300-e300-glc300-catless-downpipe-ecu-tune-k_n-filter-dv-plus.jpg?v=1774210160","url":"https:\/\/benzunitedparts.com\/products\/m274-stage-2-bundle-c300-e300-glc300","provider":"BenzUnited Parts","version":"1.0","type":"link"}