{"product_id":"renntech-ecu-hand-held-tuner-hht-mercedes-221-s-63-biturbo","title":"Renntech ECU Hand Held Tuner HHT - Mercedes \/ 221 \/ S 63 BiTurbo","description":"\u003cp\u003eRENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!\u003c\/p\u003e\n\u003cp\u003eOur proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes only a few minutes and the vehicle can be reflashed at any time as many times as you wish.\u003c\/p\u003e\n\u003cp\u003eRENNtech M157 Biturbo ECU+ Upgrades are TÜV approved!\u003c\/p\u003e\n\u003cp\u003eOur proprietary ECU+ upgrade for the Mercedes M157 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOur ECU tune offers the biggest performance gains on the market; increasing performance from 563 HP and 594 lb\/ft torque, to an astonishing 669 HP and 734 lb\/ft at the crank! \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable border=\"0\" frame=\"border\" cellspacing=\"15\"\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\u003eS 63 AMG (W221 | Sedan | MY2006-13 | RWD | M157 | 5.5L 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\u003e537 \u003c\/strong\u003eHP @ 5,500rpm;\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e590 \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\u003e563 \u003c\/strong\u003eHP @ 5,500rpm;\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e594 \u003c\/strong\u003eLB-FT @2,800-3,900rpm\n\u003cul\u003e\n\u003cli\u003e\u003cem\u003eNote: Mercedes M157 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\u003eS 63 AMG (W221 | Sedan | MY2006-13 | RWD | M157 | 5.5L 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\u003e669 \u003c\/strong\u003eHP @ 5,500rpm;\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e734 \u003c\/strong\u003eLB-FT @ 3,700rpm\u003c\/li\u003e\n\u003c\/ul\u003e\n                                                    575 awhp @ 5,500rpm; 631 awtq @ 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\n\u003cp\u003e\u003ca href=\"https:\/\/www.renntechmercedes.com\/images\/stories\/virtuemart\/product\/RENNtech_221_s63_rwd_M157_ECU+.jpg\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg src=\"https:\/\/www.renntechmercedes.com\/images\/stories\/virtuemart\/product\/RENNtech_221_s63_rwd_M157_ECU+.jpg\" border=\"0\" width=\"800\" height=\"473\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RENNtech","offers":[{"title":"Default Title","offer_id":42577748000961,"sku":"ECU:54.221.S63BT","price":2980.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0005\/7773\/2663\/products\/renntech_hht_002_7cb531cd-6508-4e3f-93a0-2af56c5bda27.jpg?v=1683935145","url":"https:\/\/www.urotuning.com\/products\/renntech-ecu-hand-held-tuner-hht-mercedes-221-s-63-biturbo","provider":"UroTuning","version":"1.0","type":"link"}