The Citroen C5 2.0 HDI 90hp (2001 - 2008) produces 90bhp and 205Nm in standard form. Our Stage 1 ECU tuning file raises output to 120bhp and 275Nm, a gain of 30bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.