The Renault Master 2.5 DCi 125hp (1998 - 2010) produces 125bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 150bhp and 360Nm, a gain of 25bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.