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    SKU: FS.MER.M157.ET

    Mercedes-Benz AMG 63 5.5L V8 Bi-Turbo ExperTune Performance Software

    Excluding GST |
    Performance ECU software upgrade improves horsepower, torque, and driving characteristics of the M157 5.5L V8 Bi-Turbo Engine by reprogramming various sensor inputs, air/fuel ratios, and boost pressure.
    Fits all Mercedes-Benz AMG 63 M157 5.5L V8 Bi-Turbo Vehicles: E-Class / S-Class / CLS-Class / SL-Class / G-Class / GLE-Class / GLS-Class
    Stock - 577 HP / 590 TQ
    Tuned - 747 HP / 790 TQ
    Fabspeed Motorsport saves your stock/factory ECU settings so that you can revert your vehicle back to stock settings at any time
    Read stock data on vehicle via OBD-II port with Handheld
    Interface Handheld with software on your computer and send in data to Fabspeed Motorsport via email to
    We use this data along with information you provide about your vehicle to write a tune for your specific setup and email back your custom tune in 1-2 business days
    Write the Fabspeed ECU Tune to your Handheld, then to the vehicle with the Handheld
    Enjoy your increased performance!
    No need to send your ECU in to return to stock - simply use the Handheld to flash back, then to your Fabspeed ExperTune again at any point!
    Please review our
    Tuning Guide
    in the instructions above and email the ECU Tuning Information form to us. We utilize this form to ensure we meet your needs and consider your modifications to deliver the best possible results.
    You must have access to a PC / Windows computer (Mac OS not supported) to upload your factory file information to us via email and in turn apply our ECU Tune to your Handheld device.
    Upon sending us your vehicle information, our tuner will email you a custom ECU Tune(s) within 1-2 business days.
    The Handheld device "marries" with your vehicle and can only be used on one vehicle.
    • HP (whp): +170 TQ (ft/lbs): +200 WT (lbs): N/A
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