RENNtech ECU Upgrade | W221 | S 550 | 500HP / 625 LB-FT | 4.7L V8 BiTurbo | M278 | MY2011-2013 mercedes-benz-c-class--204-sedan---2008-2014--c-63--amg-black-series-esr3194090 Complete the look with a

Complete the look with a set of two exquisite tailpipes in titanium or carbon fibre

0" Weight:   Construction: 1-piece Cast Tire Size: 275/25-20

523 LB-FT @ 5200 RPM

AMG GT63 4 Door Coupe / AMG C63 / SL (R231)

RENNtech ECU Upgrade | W221 | S 550 | 500HP / 625 LB-FT | 4.7L V8 BiTurbo | M278 | MY2011-2013 mercedes-benz-c-class--204-sedan---2008-2014--c-63--amg-black-series-esr3194090 Complete the look with aECU Upgrade 500HP 625LB FT Gains: +52HP +87LB 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