{"product_id":"cls550-biturbo-ecu-tuning","title":"CLS550 Biturbo ECU Tuning","description":"\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eUnlock the hidden performance within your luxury four-door coupe 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 CLS 550 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 gains of up to \u003cb\u003e+108 horsepower and +218 ft-lbs of torque\u003c\/b\u003e. \u003ci\u003ePlease note: Exact performance results may vary based on dyno type, ambient temperature, fuel quality, and more.\u003c\/i\u003e\u003c\/p\u003e\n\u003ch4\u003eRefined Dyno-Proven Calibration\u003c\/h4\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 CLS 550 retains its signature factory refinement, smooth shifting characteristics, and sophisticated cruising manners. All factory engine protection routines, thermal thresholds, and knock sensors remain fully active for total operational safety.\u003c\/p\u003e\n\u003ch4\u003eKey Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMassive Output Gains:\u003c\/b\u003e Delivers increases of up to \u003cb\u003e+108 HP and +218 TQ \u003c\/b\u003ewith MBH Downpipes over factory numbers. \u003ci\u003e(Results may vary based on dyno, temperature, fuel, and more).\u003c\/i\u003e\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\u003eCompatibility:\u003c\/h4\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 CLS 550 (W218)\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\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e  \u003c\/strong\u003e                   \u003c\/p\u003e","brand":"MBH Motorsports","offers":[{"title":"Send in your ECU","offer_id":43346789662755,"sku":null,"price":985.0,"currency_code":"USD","in_stock":true},{"title":"Remote flash device (+$199)","offer_id":44195196043299,"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","url":"https:\/\/mbhmotorsports.com\/products\/cls550-biturbo-ecu-tuning","provider":"MBH Motorsports","version":"1.0","type":"link"}