The Mazda 3 1.6i 16v 105hp (2003 - 2009) produces 105bhp and 145Nm in standard form. Our Stage 1 ECU tuning file raises output to 115bhp and 160Nm, 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.