RENNtech ECU Upgrade | GL 550 | X166 | 480HP / 605LB-FT | 4.7L BiTurbo | M278 Engine mercedes-benz-e-class-wagon--213---2017-present--e-350-esr7034463 The end result is nothing

The end result is nothing short of spectacular with the RENNtech turbo package gaining up to 198 hp and 138 lb-ft

650rpm Note: Mercedes M176 engine performance when measured

R1 Performance Package for the Bentley Continental GT Speed

S 63 AMG (W221 | Sedan | MY2006-13 | RWD | M157 | 5

Fully compatible with factory exhaust valves

RENNtech ECU Upgrade | GL 550 | X166 | 480HP / 605LB-FT | 4.7L BiTurbo | M278 Engine mercedes-benz-e-class-wagon--213---2017-present--e-350-esr7034463 The end result is nothingECU Upgrade 480HP 605LB FT Gains: +32HP +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