Hummer H3 2006 - 2010 5.3 V8 300hp ECU Remapping
A professional ECU remap can optimise the way your Hummer H3 delivers power and torque, helping the vehicle feel stronger, smoother and more responsive in everyday driving.
The expected Stage 1 figures for this vehicle show an increase from 300 BHP to 320 BHP, with torque improving from 430 Nm to 450 Nm.