The Citroen C4 Cactus 1.2 Puretech 110hp (2018 ->) produces 110bhp and 205Nm in standard form. Our Stage 1 ECU tuning file raises output to 145bhp and 270Nm, a gain of 35bhp and 65Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.