The Renault Express 1.5 dCi 75hp (2021 ->) produces 75bhp and 200Nm in standard form. Our Stage 1 ECU tuning file raises output to 140bhp and 320Nm, a gain of 65bhp and 120Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.