The Seat Leon 2.0 TDI 140hp (1P - 2005 - 2012) produces 140bhp and 320Nm in standard form. Our Stage 1 ECU tuning file raises output to 175bhp and 390Nm, a gain of 35bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.