The Seat Leon 1.8T 20v 180hp (1M - 2000 - 2006) produces 180bhp and 235Nm in standard form. Our Stage 1 ECU tuning file raises output to 220bhp and 330Nm, a gain of 40bhp and 95Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.