You can find the chip tuning file for your Hummer H3 2006 - 2010 3.5 220hp 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 Hummer H3 2006 - 2010 3.5 220hp vehicle is the result of a special product by EcuPrime Engineers. In addition, we can increase the power of your vehicle from 220 HP to 240 HP, 305 Torque to 325 Torque.