The Seat Arosa 1.4i 16v 100hp (2001 - 2004) produces 100bhp and 126Nm in standard form. Our Stage 1 ECU tuning file raises output to 110bhp and 141Nm, a gain of 10bhp and 15Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.