The Seat Leon 2.0 TSI Cupra 300hp (5F MK2 - 2017 - 2019) produces 300bhp and 380Nm in standard form. Our Stage 1 ECU tuning file raises output to 365bhp and 470Nm, a gain of 65bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.