The Citroen DS 7 Crossback 1.6 PureTech 225hp (2018 ->) produces 225bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 240bhp and 350Nm, a gain of 15bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.