The Seat Leon 1.9 SDI 68hp (1M - 2000 - 2006) produces 68bhp and 133Nm in standard form. Our Stage 1 ECU tuning file raises output to 80bhp and 155Nm, a gain of 12bhp and 22Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.