{"title":"S550 Coupe \/ S500 Coupe · C217 · M278 (2015–2017)","description":"\u003cp\u003eParts and upgrades that fit the S550 Coupe \/ S500 Coupe (C217 chassis, M278 engine, 2015–2017).\u003c\/p\u003e","products":[{"product_id":"s550-coupe-biturbo-downpipe","title":"S550 Coupe Biturbo Downpipe","description":"\u003cp\u003eThe Mercedes S550 Coupe sits at the top of the mountain when it comes to luxury performance coupes, flawlessly pairing grand-touring refinement with twin-turbo V8 capability. At MBH Motorsports, we engineered our S550 Coupe Biturbo Downpipes to eliminate severe factory exhaust restrictions and push this platform to the next level—elevating your S550 Coupe beyond stock S63 AMG power figures when paired with performance ECU tuning. 170+ hp 210+ tq\u003c\/p\u003e\n\u003cp\u003eBy clearing the flow directly downstream of the turbochargers, this system drastically minimizes backpressure, accelerates boost spool, and unleashes the aggressive acceleration previously choked by restrictive factory hardware.\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eHandcrafted USA Quality \u0026amp; 1-Hour Install\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003eEvery set of MBH downpipes is proudly hand-fabricated in the USA from heavy-duty, 16-gauge T-304 American stainless steel to guarantee lifetime resistance against cracking, warping, and extreme heat cycles. Engineered around factory mounting points, this bolt-on system installs in less than an hour.\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eExceeds S63 AMG Power:\u003c\/b\u003e  170+ hp 210+ tq with tuning.  Eliminates extreme exhaust backpressure to push your M278 Biturbo past stock S63 AMG output when paired with ECU tuning.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eUnder 1-Hour Installation:\u003c\/b\u003e Direct bolt-on design engineered for a clean, quick install in under 60 minutes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e16-Gauge T-304 US Stainless Steel:\u003c\/b\u003e Handcrafted in the USA using heavy-duty American stainless steel for maximum structural integrity and thermal endurance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRapid Turbo Spool:\u003c\/b\u003e Substantially lowers exhaust backpressure off the turbochargers for instant boost response and broader mid-range torque.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAuthoritative Exhaust Note:\u003c\/b\u003e Unlocks a deeper, refined V8 growl under acceleration while preserving whisper-quiet cabin comfort at cruising speeds.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cstrong\u003eInstallation Note:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cb\u003ePlease Note:\u003c\/b\u003e Due to minor production variances across certain S-Class models, the downpipes may require slight trimming to make them ever so slightly shorter for precise alignment with factory mid-pipes.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch5\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eEngine:\u003c\/b\u003e Mercedes-Benz M278 4.6L V8 Biturbo\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eChassis:\u003c\/b\u003e Mercedes-Benz S550 Coupe (C217)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ci\u003eDisclaimer: For off-road racing and competition use only. This product is not intended or legal for installation on registered, licensed vehicles operated on public roads or highways.\u003c\/i\u003e\u003c\/p\u003e","brand":"MBH Motorsports","offers":[{"title":"Default Title","offer_id":43346789859363,"sku":null,"price":999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/5122\/4611\/files\/S550_downpipes_Dark.jpg?v=1790618781"},{"product_id":"s550-biturbo-ecu-tune","title":"S550 Biturbo ECU Tune","description":"\u003cp\u003eUnlock the hidden performance within your luxury sedan with the MBH Motorsports Performance ECU Tune. Whether you are looking for sharper responsiveness or seeking to extract the absolute maximum output from the M278 twin-turbo V8 platform, our software recalibration transforms your Mercedes S550 into an AMG-rivaling powerhouse.\u003c\/p\u003e\n\u003cp\u003eEngineered and refined through extensive dyno development and data logging, MBH ECU calibrations precisely optimize boost profiles, ignition timing, and air-fuel ratios. While providing an aggressive performance boost on an otherwise stock car, this tune is specifically calibrated to take full advantage of the reduced backpressure from an MBH Motorsports downpipe system—delivering staggering, dyno-proven gains of \u003cb\u003e+108 horsepower and +138 ft-lbs of torque\u003c\/b\u003e.\u003c\/p\u003e\n\u003ch4\u003e\u003c\/h4\u003e\n\u003ch5\u003e\u003cstrong\u003eRefined Dyno-Proven Calibration\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis is not a generic, off-the-shelf flash. Every calibration is designed to smooth out power delivery, virtually eliminate electronic throttle lag, and produce an aggressive mid-range punch that pulls hard all the way to redline. Despite the massive increase in output, the S550 retains its signature factory refinement, smooth shifting characteristics, and whisper-quiet cruising manners. All factory engine protection routines, thermal thresholds, and knock sensors remain fully active for total operational safety.\u003c\/p\u003e\n\u003ch4\u003e\u003c\/h4\u003e\n\u003ch5\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMassive Output Gains:\u003c\/b\u003e Delivers dyno-proven increases of up to \u003cb\u003e+108 HP and +138 TQ\u003c\/b\u003e over factory numbers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDyno Tested:\u003c\/b\u003e Extensively developed through hours of dyno cell calibration and high-load data logging for seamless power delivery.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDownpipe Synergy:\u003c\/b\u003e Custom-tailored to maximize airflow velocity and exhaust scavenging when paired with MBH Motorsports downpipes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eInstant Boost Response:\u003c\/b\u003e Eliminates factory throttle dead zones and lag for immediate, aggressive acceleration off the line.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFactory Safety Buffers Preserved:\u003c\/b\u003e Retains all OEM ECU failsafes, thermal limiters, and knock monitoring parameters for complete powertrain reliability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eTop Speed Limiter Removal:\u003c\/b\u003e Deactivates factory speed governors for unrestricted top-end capability on closed courses.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003c\/h4\u003e\n\u003ch5\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eEngine:\u003c\/b\u003e Mercedes-Benz M278 4.6L V8 Biturbo\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eChassis:\u003c\/b\u003e Mercedes-Benz S550 Sedan \u0026amp; Coupe (W221 \/ W222 \/ C217)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ci\u003eDisclaimer: For off-road racing and competition use only. This product is not intended or legal for installation on registered, licensed vehicles operated on public roads or highways.\u003c\/i\u003e\u003c\/p\u003e","brand":"MBH Motorsports","offers":[{"title":"Send in your ECU","offer_id":43346789924899,"sku":null,"price":985.0,"currency_code":"USD","in_stock":true},{"title":"Remote flash device (+$199)","offer_id":44195196076067,"sku":null,"price":1184.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/5122\/4611\/files\/ECU_new.jpg?v=1784570476"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/5122\/4611\/collections\/S550_coupe_site_image.jpg?v=1785252124","url":"https:\/\/mbhmotorsports.com\/collections\/c217-m278.oembed","provider":"MBH Motorsports","version":"1.0","type":"link"}