The Seat Leon 1.0 TSI 115hp (5F MK2 - 2017 - 2019) produces 115bhp and 200Nm in standard form. Our Stage 1 ECU tuning file raises output to 130bhp and 240Nm, a gain of 15bhp and 40Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.