You can request for a Tuning Calibration for your Hummer H3 2006 - 2010 3.5 220hp vehicle on our file service site.
These Tuning Calibrations always made in real time suited to your needs and cars maximum ability.
All our Tuning files are made with maximum precision and care to be efficient.
In this particular case, we can increase the power of your engine from 220 HP to 240 HP, 305 Torque to 325 Torque within a Stage1 Calibration package.