The Citroen C1 1.0 e-VTI 69hp (2014 ->) produces 69bhp and 95Nm in standard form. Our Stage 1 ECU tuning file raises output to 75bhp and 110Nm, a gain of 6bhp and 15Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.