You can find the chip tuning file for your Mercedes-Benz E W211 - 2002 - 2006 420 CDI 314hp 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 E W211 - 2002 - 2006 420 CDI 314hp vehicle is the result of a special product by Hyperols Engineers. In addition, we can increase the power of your vehicle from 314 HP to 354 HP, 730 Torque to 810 Torque.