MERCEDES BENZ CLS550-CLS500 - 4.6L V8 Biturbo M278

In stock
2012 - 2018

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Additional Information
Model CLS550 / CLS500
Series W218
Engine M278 - 4.6L V8 Biturbo
ECU MED17.7.x
Year 2012 - 2018
Stock Peak HP 402
Tuned Peak HP 500
Max HP Gain 100
Stock Peak Torque 443
Tuned Peak Torque 580
Max TQ Gain 137
Modification Description OBD2 FLASH

All gear heads have the same way of thinking….. “There is never enough power!”. That being said, this is why tuners offer packages like “Stage1″ or “Stage2″ for example. Mercedes Benz power-train “M278″ is a 4.7 liter twin-turbo (called “bi-turbo” by Mercedes Benz) monster after tuning. (The M278 power-train is named “550″ in the USA and “500″ in other parts of the world.) After installing the OE Tuning “Stage1″ ECU Tune the car tested picked up +110-130wTq & 100-110wHp to the wheels on the dyno above factory stock specs (dynograph displayed below) running premium pump fuel. When compared during a side-by-side comparison on the street the OE Tuning tuned CLS500 has performance slightly better than a CLS63 biturbo and equal to that of a CLS63 bitturbo with Performance Package.

We have Stage1 & Stage2 tuning packages to suit all Mercedes Benz Biturbo 500 & 550 with M278 powerplant. The M278 can be found in CL500 & CL550, E500 & E550, GL500 & GL550, S500 & S550 as well as SL500 & SL550 models. Please call to purcahse down-pipes.


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