The Peugeot 508 2.2 HDi 204hp (2014 - 2018) produces 204bhp and 450Nm in standard form. Our Stage 1 ECU tuning file raises output to 235bhp and 520Nm, a gain of 31bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.