The Seat Leon 1.0 TSI 110hp (5F MK1 - 2012 - 2017) produces 110bhp and 200Nm in standard form. Our Stage 1 ECU tuning file raises output to 140bhp and 240Nm, a gain of 30bhp and 40Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.