The Pontiac Montana 3.5 V6 200hp (2006 - 2009) produces 200bhp and 298Nm in standard form. Our Stage 1 ECU tuning file raises output to 220bhp and 325Nm, a gain of 20bhp and 27Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.