The Citroen C3 1.4i 16v 90hp (2002 - 2010) produces 90bhp and 133Nm in standard form. Our Stage 1 ECU tuning file raises output to 102bhp and 148Nm, a gain of 12bhp and 15Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.