The Seat Leon 2.0 TDI CR 184hp (5F MK1 - 2012 - 2017) produces 184bhp and 380Nm in standard form. Our Stage 1 ECU tuning file raises output to 225bhp and 460Nm, a gain of 41bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.