The Citroen Relay 2.2 HDi 150hp (2015 - 2019) produces 150bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 180bhp and 410Nm, a gain of 30bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.