The Seat Leon 2.0 TFSI 265hp (1P - 2005 - 2012) produces 265bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 310bhp and 420Nm, a gain of 45bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.