Fabspeed Motorsport

Fabspeed Mercedes-Benz AMG 63 4.0L V8 Bi-Turbo XperTune Performance Software


Performance ECU software upgrade improves horsepower, torque, and driving characteristics of the M177 4.0L V8 Bi-Turbo Engine by reprogramming various sensor inputs, air/fuel ratios, and boost pressure.


Fits all Mercedes-Benz AMG 63 M177 4.0L V8 Bi-Turbo Vehicles: C-Class / E-Class / S-Class / GLS-Class / GLE-Class / GLC-Class / SL-Class / G-Class

Peak Gains:

Stock - 547 HP / 664 TQTuned - 595 HP / 681 TQ

Max Gains: 60 WHP 71 ft/lbs TQ

Fabspeed Motorsport saves your stock/factory ECU settings so that you can revert your vehicle back to stock settings at any time

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.

Special requests and tune file upgrades may be subject to additional fees.