The Citroen C5 2.0i 16v 143hp (2008 - >) produces 143bhp and 200Nm in standard form. Our Stage 1 ECU tuning file raises output to 153bhp and 215Nm, a gain of 10bhp and 15Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.