{"product_id":"m271-1-8l-kompressor-custom-ecu-tuning-c230-slk200","title":"Custom ECU Tune for Mercedes M271 1.8L Kompressor – W203 C230 \u0026 R171 SLK200","description":"\u003cp\u003eA custom ECU calibration for the Mercedes \u003cstrong\u003eM271 1.8L supercharged four\u003c\/strong\u003e, written around your specific car, fuel and hardware rather than pulled off a shelf. Sharper throttle, stronger mid-range, and cleaner delivery — with every factory safety system left intact.\u003c\/p\u003e\n\u003ch3\u003eTypical Gains\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e+20 to +25 HP and +30 to +37 lb-ft\u003c\/strong\u003e from the calibration alone, on a healthy stock car running premium fuel. The M271 responds better to a remap than the older M111 does, because more of its boost behaviour is under ECU control — the supercharger runs a bypass system and the ECU decides how much of that air actually reaches the engine.\u003c\/p\u003e\n\u003cp\u003eThere is still a ceiling. The blower is geared to the crank, so the calibration can only work with the air it is already making. Add a reduction pulley and recalibrate around it and roughly \u003cstrong\u003e+40 HP over stock\u003c\/strong\u003e is the realistic combined figure. Tell us if a pulley is going on and we will write the file for it from the start rather than tuning the car twice.\u003c\/p\u003e\n\u003ch3\u003eWhat the Tune Delivers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher commanded boost\u003c\/strong\u003e — recalibrated bypass and torque model, not just a timing bump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStronger mid-range torque\u003c\/strong\u003e — where a supercharged four actually lives in street driving\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSharper throttle response\u003c\/strong\u003e — less pedal lag off idle and out of corners\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory safeguards retained\u003c\/strong\u003e — knock control and thermal limits stay active\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVehicle Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis calibration is for the \u003cstrong\u003eM271 1.8L supercharged\u003c\/strong\u003e engine — the belt-driven Kompressor unit, not the later turbocharged M271 EVO.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eC230 Kompressor Sports Coupe\u003c\/td\u003e\n\u003ctd\u003eCL203\u003c\/td\u003e\n\u003ctd\u003e2003–2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eC230 Kompressor Sedan \/ Wagon\u003c\/td\u003e\n\u003ctd\u003eW203 \/ S203\u003c\/td\u003e\n\u003ctd\u003e2004–2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSLK200 Kompressor\u003c\/td\u003e\n\u003ctd\u003eR171\u003c\/td\u003e\n\u003ctd\u003e2004–2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCustom calibration developed for your car, fuel grade and modification list\u003c\/li\u003e\n\u003cli\u003eReturn-to-stock file\u003c\/li\u003e\n\u003cli\u003eDirect support through the flash process\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BenzUnited Parts","offers":[{"title":"Default Title","offer_id":47275510268079,"sku":"BU-M271K-TUNE","price":700.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/Motor_M271.jpg?v=1785665684","url":"https:\/\/benzunitedparts.com\/products\/m271-1-8l-kompressor-custom-ecu-tuning-c230-slk200","provider":"BenzUnited Parts","version":"1.0","type":"link"}