RENNtech ECU Upgrade | X166 | GLS 550 | 500HP / 605LB-FT | 4.7L V8 BiTurbo | M278 mercedes-benz-c-class--204-sedan---2008-2014--c-320-cdi-esr4861286 616 LB-FT @ 3600 RPM

616 LB-FT @ 3600 RPM

With the replacement of the stock downpipes we improve performance

With the RENNtech ECU Plus Upgrade the W213 - E43 AMG Sedan gains up to +14 HP and +57 LB-FT

Mercedes-Benz S560 Sedan (MY2018+ | C217 | M176 | 4

RPM Tuned: 725 HP | 765 LB-FT

RENNtech ECU Upgrade | X166 | GLS 550 | 500HP / 605LB-FT | 4.7L V8 BiTurbo | M278 mercedes-benz-c-class--204-sedan---2008-2014--c-320-cdi-esr4861286 616 LB-FT @ 3600 RPMECU Upgrade 500HP 605LB FT Gains: +26HP +67LB 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