GMC Savana 6.6 V8 365hp ECU Tuning File

The GMC Savana 6.6 V8 365hp (2003 ->) produces 365bhp and 894Nm in standard form. Our Stage 1 ECU tuning file raises output to 390bhp and 930Nm, a gain of 25bhp and 36Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.