The Citroen DS5 1.6 THP 156hp (2011 - 2015) produces 156bhp and 275Nm in standard form. Our Stage 1 ECU tuning file raises output to 195bhp and 345Nm, a gain of 39bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.