RENNtech ECU Upgrade | C216 | CL 550 | 500HP / 625 LB-FT | 4.7L V8 BiTurbo | M278 | MY2011-2014 mercedes-benz-c-class--205-sedan---2015-2022--c-350e-plug-in-hybrid-esr8664468 Our mufflers with 2 3/4

Our mufflers with 2 3/4 inch diameter tubing offer lighter weight than the stock exhaust and improve performance by reducing exhaust back pressure

GLS63 AMG (X166 | SUV | MY2016+ | 4MATIC | M157 | 5

Rated by Mercedes-Benz (peak

RENNtech Carbon Fiber Air Box for M113 V8 Kompressor Engines

176-A 45 AMG

RENNtech ECU Upgrade | C216 | CL 550 | 500HP / 625 LB-FT | 4.7L V8 BiTurbo | M278 | MY2011-2014 mercedes-benz-c-class--205-sedan---2015-2022--c-350e-plug-in-hybrid-esr8664468 Our mufflers with 2 3/4ECU 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