Weistec ECU Upgrade for Mercedes SL 550 (R232 / M278) MY 12-Present

$2,550

M278 ECU Upgrade

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+ 540 WHEEL HORSEPOWER
+ 615  WHEEL TORQUE

 

As an industry leader in tuning and calibration, Weistec Engineering is proud to introduce the much anticipated ECU tune for the bi-turbo M278 vehicle lineup. After months of painstaking dyno and road tuning, we are proud to introduce the most powerful ECU upgrade ever released for the M278 engine. Fully developed in house, our ECU tune has surpassed the 540 horsepower mark on a completely stock vehicle with no other modifications.

After converting the naturally aspirated M156 motor to a forced induction application, the tuning of a factory forced induction engine is right in our wheelhouse. With a keen understanding for optimal running conditions for the M278, we have revised many features of the factory ECU programming which creates an astounding 540 horsepower and 615 torque on California pump 91 octane.

Have a problem with your current tune you purchased from someone else? Send in your ECU for a free diagnosis.KEY FEATURES:
540 Horsepower
615 Ft-Lbs Torque
Eliminate Top Speed Limiter
Increased Throttle Response
Optimized Boost, Fuel and Spark

 

NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES

*Unless otherwise stated, some Weistec Engineering performance upgrades are sold for race car use only.

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