The Seat Leon 1.8T 20v 210hp (1M - 2000 - 2006) produces 210bhp and 270Nm in standard form. Our Stage 1 ECU tuning file raises output to 240bhp and 340Nm, a gain of 30bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.