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    M177 ECU Upgrade

    sku:M177 ECU Upgrade

    Availability: In stock


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    M177 ECU Upgrade

    The M177 engine in the W205 C63 and C63-S models is a potent powerplant.  Through rigorous testing, on both the street and dyno, the Weistec M177 ECU Upgrade reliably extracts massive gains in the mid range of the powerband as well as substantial gains in the top end making the C63 / C63-S a top performer in all driving situations

    Stock vs Westec ECU and Filters


    Weistec C63 / C63-S ECU Power 

    What does all this mean to you?  More power, sharper throttle response, and a complete focus on the driver makes this the perfect addition to your AMG for a much more enjoyable experience for you. 

    *Power gains vary based on model and modifications.

    Watch a Customers First Test Drive Reaction

    ECU Calibration Process: How do I get my ECU Calibrated?

    Key Features:

    • Eliminated Top Speed Limiter

    • Improved Throttle Response

    • Optimized Fuel, Spark, and Boost

    • +68 Wheel Horse Power +80 Wheel Torque Peak Gains with Air Filters

    • +97 Wheel Horse Power +114 Wheel Torque Peak Gains with Air Filters and Downpipes  

    PDF Fileweistec_w205_m177_ecu_removal_manual (210.5 KB)Download

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    Weistec Engineering performance upgrades may be used solely on vehicles used in sanctioned competition which may never be used upon a public road or highway, unless permitted by specific regulatory exemptions. For state specific details please visit the following website.
    It is the responsibility of the installer and/or user of the product to ensure that it is used in compliance with all applicable laws and regulations. If a product was purchased in error, do not install and/or use it. The purchaser must arrange to return the product(s) for a full refund.
    This policy only applies to installers and/or users who are in the United States, customers who reside in other countries should act in accordance with their local laws and regulations.
    All performance modifications and installations are at the customer’s own risk. Weistec Engineering holds no responsibility either implied or otherwise for mechanical, electrical or other failure when using any aftermarket performance products.