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Performance Parts for Euro, JDM & American Autos.

Product Image WEISTEC M156 Naturally Aspirated ECU Upgrade, Stage 1

WEISTEC M156 Naturally Aspirated ECU Upgrade, Stage 1


As a leader in tuning and calibration, Weistec Engineering is proud to release tuning packages for the naturally aspirated M156/M159 vehicle lineup. Our ability to successfully innovate and create the world's first 50 state legal supercharger system for the 6.3L AMG has allowed us to further identify and understand the complex factory modules.

We have created a strong yet reliable tuning solution that utilizes the same calibration technology that has been applied to our Supercharger System. With a keen understanding for optimal running conditions for the M156, we have revised many features of the ECU which creates an astounding 441 horsepower to the wheels on 91 octane.

The Weistec Upgrade Promise

Customers who purchase our ECU Upgrades will receive credit towards the purchase of a Stage 1/1+ Supercharger System, if you are thinking of supercharging your car in the future and are not ready for the purchase, this is a good way to not spend money twice, while making more power right away.

Have a problem with your current tune you purchased from someone else? Send in your ECU for a free diagnosis.


Key Features:

  • +47 Wheel Horsepower
  • +32 Wheel Torque
  • Eliminate Top Speed Limiter
  • Increased Throttle Response
  • Optimized Fuel and Spark
  • Credit towards Stage 1/1+ Supercharger Systems
Supported Platforms
  • 2008-Present C63 AMG (Sedan and Wagon)
  • 2012-Present C63 AMG Black Series
  • 2007-2008 CLK63 AMG
  • 2008 CLK63 Black Series
  • 2007-2010 CLS63 AMG
  • 2007-2011 E63 AMG (Sedan and Wagon)
  • 2007-2010 S63 AMG
  • 2007-2011 ML63 AMG
  • 2007 R63 AMG
  • 2008-2010 CL63 AMG
  • 2009-2011 SL63 AMG