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    M159 SLS Black Series ECU Upgrade


    Availability: In stock


    M159 SLS Black Series ECU Upgrade

    +79 Wheel Horsepower, +58 Wheel Torque

    When it comes to upgrading the 6.2L M159 engine that powers the SLS Black Series, no one does it better than Weistec Engineering. Our SLS Black Series ECU upgrade provides peak gains of nearly 30hp at the wheels as well as improving the engine’s long power band on an otherwise stock car.

    CARB EO# D-691-3

    When our SLS Black Series ECU upgrade is paired with long tube headers, peak gains are nearly 80hp at the wheels with substantial gains throughout the entire power band and improved throttle response!

    600 WHP, SLS Black Series Dyno, Weistec Tune and Headers on 91 Octane!


    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 SLS Black Series, we have revised many features of the ECU which creates up to an astounding 600 horsepower to the wheels on 91 octane!

    SLS Black Series: Weistec Tune Only

    • +28 Wheel Horsepower

    • +11 Wheel Torque

    SLS Black Series: Weistec Tune and Long Tube Headers

    • +79 Wheel Horsepower

    • +58 Wheel Torque

    *Power gains vary based on model and modifications.

    ECU Tuning Process: How do I get my ECU tuned?

    Key Features:

    • Eliminate Top Speed Limiter

    • Increased Throttle Response

    • Optimized Fuel and Spark

    • Smooth Factory Power Curves

    PDF Fileweistec_w197_sls_ecu_removal_manual_1 (381.5 KB)Download


    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.
    Some Weistec Engineering performance upgrades may solely be used on vehicles in sanctioned competition which may never be used upon a public road or highway, unless permitted by specific regulatory exemptions (such as a CARB E.O.). 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.
    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.


    WARNING: Cancer and Reproductive Harm