Hummer H3 3.5 220hp ECU Tuning File

The Hummer H3 3.5 220hp (2006 - 2010) produces 220bhp and 305Nm in standard form. Our Stage 1 ECU tuning file raises output to 240bhp and 325Nm, a gain of 20bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.