RENNtech ECU Upgrade | W222 | S 550 | 500HP / 625LB-FT | 4.7L V8 BiTurbo | M278 | MY2014-2017 mercedes-benz-s-class-coupe--217---2015-2017--s63-amg-biturbo-esr3084673 6 Series (E64) 630 Ci

6 Series (E64) 630 Ci (HP: 258 | Year: 04 > 07)

SL (R230) 350 V6 [2 Filters Required] (HP: 272 | Year: 06 > 08)

the functionality is fully optimized when combined with the RENNtech front canards

Stock Axle Shaft OD= 29

Up to 709 HP and 638 LB-FT @ crank

RENNtech ECU Upgrade | W222 | S 550 | 500HP / 625LB-FT | 4.7L V8 BiTurbo | M278 | MY2014-2017 mercedes-benz-s-class-coupe--217---2015-2017--s63-amg-biturbo-esr3084673 6 Series (E64) 630 CiECU Upgrade 500HP 625LB FT Gains: +26HP +59LB FT Our 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. This 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