The Citroen C5 3.0i V6 210hp (2008 - >) produces 210bhp and 285Nm in standard form. Our Stage 1 ECU tuning file raises output to 225bhp and 305Nm, a gain of 15bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.