You can find the chip tuning file for your Mercury Mariner 2005 - 2012 2.5i 171hp 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 Mercury Mariner 2005 - 2012 2.5i 171hp vehicle is the result of a special product by EcuPrime Engineers. In addition, we can increase the power of your vehicle from 171 HP to 190 HP, 232 Torque to 250 Torque.