The Audi A3 1.9 TDI 90hp (8L - 1996 - 2003) produces 90bhp and 210Nm in standard form. Our Stage 1 ECU tuning file raises output to 120bhp and 265Nm, a gain of 30bhp and 55Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.