Transform your 2015-2018 Mercedes-AMG G63 (W463) into a true performance machine with the Fabspeed XperTune ECU upgrade. Developed and tested on the dyno, XperTune unlocks significant power gains while maintaining factory reliability and drivability.
Imagine your G-Wagon with an extra 101 horsepower and 166 lb-ft of torque at your command! This tune optimizes air/fuel ratios, boost pressure, and other parameters, delivering an impressive 80HP and 130 ft/lbs of torque increase in curve gains, and pushing your G63 to the next level of performance.
Key Benefits:
Dyno-Proven Power: Increase peak power by 101 HP and 166 ft/lbs of torque.
Simple OBD-II Flash: Flash the ECU directly through your G63's OBD-II port – no mechanical skills required! The handheld device saves your factory tune so you can revert to stock settings at any time.
Great Drivability: Improves throttle response and part-throttle drivability, providing a smoother, more responsive driving experience.
Lifetime Warranty: All Fabspeed performance products are backed by our industry-leading Lifetime Warranty for peace of mind.
Co-Developed Excellence: Co-developed in Germany and the USA to guarantee optimum reliability.
Tuning Process:
Read your G63's stock ECU data via the OBD-II port using the handheld device.
Email the data to Fabspeed Motorsport for a custom tune (tuning@fabspeed.com). Include information about your vehicle and modifications.
Receive your custom tune from Fabspeed within 1-2 business days.
Flash the tune to your G63 using the handheld device.
Enjoy the increased performance!
Important Notes:
Please carefully review the Tuning Guide and send the ECU Tuning Information form to Fabspeed.
You must have access to a PC/Windows computer to upload your factory file information. (Mac OS is not supported).
The handheld device "marries" to your specific vehicle and can only be used on that vehicle.
Tune file upgrades may be subject to additional fees.
Compatibility:
Mercedes-Benz AMG G63 (W463) 2015-2018
Fabspeed Motorsport | FS.MER.G631518.ET
Use collapsible tabs for more detailed information that will help customers make a purchasing decision.
Ex: Shipping and return policies, size guides, and other common questions.
