Fabspeed XperTune for Mercedes-AMG 63 M177 4.0 V8

Match the M177-powered AMG 63 ECU and original output level to its calibration. The AMG badge alone does not identify the engine; later engines and different 63 generations require separate verification. Fabspeed Motorsport designs performance exhaust systems, air intakes and ECU tuning in Fort Washington, Pennsylvania. Porsche and other sports-car applications are developed through dyno testing, road evaluation and racetrack work.

Technical Details

• Manufacturer product reference: FS.MER.M177.ET.
• M177 4.0-liter twin-turbo V8 applications only.
• Listed handheld workflow requires Windows PC and original ECU data.
• Device is linked to one vehicle under the supported process.
• Submit fuel and hardware/modification form.
• Published peak and maximum differences are separate test measures, not universal gains.
• Confirm supported ECU and current supplied equipment.

Use restrictions

The calibration must retain required emissions controls. Fabspeed excludes requests to disable emissions equipment or its monitoring.

Installation Resources

• Handheld ECU tuning guide (PDF)

Manufacturer Videos

Fabspeed XperTune Handheld Tuner Tutorial | Including MyGenius Software Tutorial

Demonstration vehicles may have additional modifications. The selected product configuration determines what is supplied; a video does not establish fitment or guarantee a particular sound or output.

Need help matching this part? PMB Performance brings over 20 years of parts and fitment experience. Send your VIN, ECU reference, fuel and modification list so we can help verify the application before you order.

Fitment & Compatibility