The Mazda 5 2.0 CiTD 143hp (2004 ->) produces 143bhp and 360Nm in standard form. Our Stage 1 ECU tuning file raises output to 169bhp and 420Nm, a gain of 26bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.