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 Pfaff Pro Exhaust for the

Pfaff Pro Exhaust for the McLaren 650S and MP4-12c

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

RENNtech is able to add up to 111 HP and 147 LB-FT to the 5

R1 Performance Package for the Bentley Continental GT Speed

Performance package R1 includes our proprietary ECU tune and crankshaft pulley in addition to our higher efficiency intercooler pump for increased

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 Pfaff Pro Exhaust for theECU 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