The Citroen C4 Picasso / C4 SpaceTourer 2.0 BlueHDi 163hp (2017 ->) produces 163bhp and 400Nm in standard form. Our Stage 1 ECU tuning file raises output to 200bhp and 450Nm, a gain of 37bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.