The Citroen Relay 3.0 HDi 180hp (2015 - 2019) produces 180bhp and 400Nm in standard form. Our Stage 1 ECU tuning file raises output to 215bhp and 500Nm, a gain of 35bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.