RENNtech ECU Upgrade | C218 | CLS 550 | 480HP / 605LB-FT | 4.7L V8 BiTurbo | M278 | MY2015-2018 audi-a8--d3---2002-2009--4-2-l-v8-fsi-esr7551102 0 (HP: 204 | Year:

0 (HP: 204 | Year: 04 > 07)

it will not return

The RENNtech ECU Plus Upgrade brings the C 43 AMG Sedan up to 416 HP and 460 LB-FT | Gains: +41 HP and +62 LB-FT

The splitter is easy to install and retains the OEM clearance for parking stops and steep driveways

The SLR McLaren Performance Exhaust consists of RENNtech Stainless Steel Sport Mufflers

RENNtech ECU Upgrade | C218 | CLS 550 | 480HP / 605LB-FT | 4.7L V8 BiTurbo | M278 | MY2015-2018 audi-a8--d3---2002-2009--4-2-l-v8-fsi-esr7551102 0 (HP: 204 | Year:ECU Upgrade 480HP 605LB FT Gains: +45HP 162Lb 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