The Mazda 6 2.0 CiTD 120hp (2003 - 2008) produces 120bhp and 310Nm in standard form. Our Stage 1 ECU tuning file raises output to 170bhp and 370Nm, a gain of 50bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.