You can find the chip tuning file for your Mercedes-Benz S W221 - 2005 - 2013 63 AMG 525hp vehicle on our site. These files are created especially for you and handed to you. All our Tuning files are extensively tested on Dynometer. The development of the tuning file for your Mercedes-Benz S W221 - 2005 - 2013 63 AMG 525hp vehicle is the result of a special product by EcuPrime Engineers. In addition, we can increase the power of your vehicle from 525 HP to 541 HP, 630 Torque to 650 Torque.