The Seat Leon 1.6 TDI CR 105hp (5F MK1 - 2012 - 2017) produces 105bhp and 250Nm in standard form. Our Stage 1 ECU tuning file raises output to 150bhp and 320Nm, a gain of 45bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.