The Mazda 3 1.5 Skyactiv-D 105hp (2016 - 2018) produces 105bhp and 270Nm in standard form. Our Stage 1 ECU tuning file raises output to 130bhp and 320Nm, a gain of 25bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.