RENNtech ECU Upgrade | C216 | CL 550 | 500HP / 625 LB-FT | 4.7L V8 BiTurbo | M278 | MY2011-2014 audi-rs7--c8---2019-present--4-0l-v8-tfsi-esr3673228 • AMG GT 55

• AMG GT 55

750rpm Note: Mercedes M176 engine performance when measured on the dyno obtains higher power numbers than rated from factory

RPM Tuned: 601 HP | 560 LB-FT

CFD analysis

With the use of a receiver to drive the actuators that open or close the valves at the end of the exhaust system

RENNtech ECU Upgrade | C216 | CL 550 | 500HP / 625 LB-FT | 4.7L V8 BiTurbo | M278 | MY2011-2014 audi-rs7--c8---2019-present--4-0l-v8-tfsi-esr3673228 • AMG GT 55ECU 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