The Seat Arosa 1.4 TDI 75hp (1997 - 2001) produces 75bhp and 195Nm in standard form. Our Stage 1 ECU tuning file raises output to 101bhp and 245Nm, a gain of 26bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.