The Mazda 6 1.8i 16v 120hp (2003 - 2008) produces 120bhp and 165Nm in standard form. Our Stage 1 ECU tuning file raises output to 130bhp and 180Nm, a gain of 10bhp and 15Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.