{"product_id":"renntech-ecu-hand-held-tuner-hht-mercedes-231-sl-550","title":"Renntech ECU Hand Held Tuner HHT - Mercedes \/ 231 \/ SL 550","description":"\u003cp\u003eOur intermediate level ECU upgrade for the Mercedes M278 engine still offers huge gains in performance across the entire RPM range, but with a slightly reduced peak HP and torque from our standard tune.\u003c\/p\u003e\n\u003cp\u003eThis is ideal for customers who want increased performance in their daily driver without worry of extra strain on driveline components or for areas and countries with extreme altitudes, temperatures or fuel quality concerns. \u003c\/p\u003e\n\u003cp\u003eOur intermediate ECU tune increases performance from 429 HP and 516 lb\/ft torque up to 500 HP and 625 lb\/ft at the crank! This is a slight reduction from our standard tune but still offers white knuckle performance at one of the most affordable price points in the tuning market.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cem\u003eWe have found the M278 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz. We typically see higher baseline numbers than claimed by the factory.\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003ePower gains are calculated based on stock numbers measured by RENNtech. \u003c\/em\u003e\u003cem\u003eCrank Performance Numbers are calculated with a 14% Drivetrain loss on RWD vehicles.\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eOur numbers will be dependent on conditions and fuel quality. 91+ Octane gasoline is mandatory with this Performance Upgrade.\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eStates known for poor fuel quality have to be supplied with a lower power setup. Please call for details and Race fuel options +1-561-845-7888.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable border=\"0\" cellspacing=\"15\" frame=\"border\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Numbers Overview\u003c\/strong\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSL550 (R231 | MY2016+ | RWD | M278 | 4.7L V8 BiTurbo) Stock Performance (at crank):\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRated by\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMercedes-Benz\u003c\/strong\u003e:      \u003cstrong\u003e449 \u003c\/strong\u003eHP @ 5,500rpm;\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e516 \u003c\/strong\u003eLB-FT @ 2,000-4,500rpm\u003c\/li\u003e\n\u003cli\u003eRated by\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRENNtech\u003c\/strong\u003e:              \u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e474 \u003c\/strong\u003eHP @ 5,500rpm;\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e566 \u003c\/strong\u003eLB-FT @2,800-3,900rpm\n\u003cul\u003e\n\u003cli\u003e\u003cem\u003eNote: Mercedes M278 engine performance when measured, obtains higher power numbers than rated from factory.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e \u003cstrong\u003e \u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSL550 (R231 | MY2016+ | RWD | M278 | 4.7L V8 BiTurbo) Modified Performance (at crank):\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRated by \u003cstrong\u003eRENNtech\u003c\/strong\u003e:              \u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e500 \u003c\/strong\u003eHP @ 5,500rpm;\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e625 \u003c\/strong\u003eLB-FT @ 3,700rpm\u003c\/li\u003e\n\u003c\/ul\u003e\n                                                    430whp @ 5,500rpm; 538wtq @ 3,700rpm\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cem\u003eCrank Performance Numbers are calculated with a 14% Drivetrain loss on RWD vehicles.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"RENNtech","offers":[{"title":"Default Title","offer_id":42577748623553,"sku":"ECU:54.231.SL550BI.FL","price":2240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0005\/7773\/2663\/products\/renntech_hht_002_2441e131-9e75-410b-a093-bd7255d203c9.jpg?v=1683936047","url":"https:\/\/www.urotuning.com\/products\/renntech-ecu-hand-held-tuner-hht-mercedes-231-sl-550","provider":"UroTuning","version":"1.0","type":"link"}