The Citroen C-Elysee 1.6 BlueHDI 99hp (2016 ->) produces 99bhp and 254Nm in standard form. Our Stage 1 ECU tuning file raises output to 130bhp and 320Nm, a gain of 31bhp and 66Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.