The Citroen Relay 2.2 HDi 110hp (2015 - 2019) produces 110bhp and 250Nm in standard form. Our Stage 1 ECU tuning file raises output to 180bhp and 360Nm, a gain of 70bhp and 110Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.