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.                                  FEATURES: 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 TQ Tuned - 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 TUNING PROCESS: 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 tuning@fabspeed.com  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 Fabspee