Fabspeed Tuning

Mercedes-Benz G-Wagen G63 AMG XperTune (2015-2018)


Achieve maximum power from the biturbo V8 without sacrificing drivability or reliability by fine-tuning the engine's performance. Fabspeed Motorsport offers an alternative tuning method for vehicles equipped with ECU's that traditionally required bench flashing. o longer do you need to remove your ECU and mail it in for a tune. The Handheld device interfaces with the OBD-II port on your vehicle and to complete the tuning process. Simply flash your G-Wagon with a Fabspeed ECU XperTune utilizing the included handheld tuner. Our XperTune upgrade improves horsepower, torque, and driving characteristics by reprogramming various sensor inputs, air/fuel ratios, and boost pressure.


Fits all Mercedes Benz AMG G63 G-Wagon Vehicles from 2015-2018

Power gains of 101 HP and 166 ft/lbs of TQ

The handheld device saves the factory tune and can be used to reflash the car back to stock at any time

Simple straight forward user interface

Great part-throttle drivability

Co-developed in Germany and USA

All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

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.