RENNtech ECU Upgrade | C218 | CLS 550 | 480HP / 605LB-FT | 4.7L V8 BiTurbo | M278 | MY2015-2018 mercedes-benz-gle-class--166---2016-2020--gle-450-esr9780931 Note: Mercedes M178 engine performance

Note: Mercedes M178 engine performance when measured

The end result is nothing short of spectacular with the RENNtech turbo package gaining up to 208 hp and 137 lb-ft

163 X 18 X 32 mm

Modified PErformance:

Estimated installation time: 30-60 min

RENNtech ECU Upgrade | C218 | CLS 550 | 480HP / 605LB-FT | 4.7L V8 BiTurbo | M278 | MY2015-2018 mercedes-benz-gle-class--166---2016-2020--gle-450-esr9780931 Note: Mercedes M178 engine performanceECU 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