The Peugeot 407 2.0 HDiF 136hp (2004 - 2011) produces 136bhp and 320Nm in standard form. Our Stage 1 ECU tuning file raises output to 175bhp and 380Nm, a gain of 39bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.