The Audi TT 1.8T 20V 225hp (1998 - 2006 ( 8N )) produces 225bhp and 280Nm in standard form. Our Stage 1 ECU tuning file raises output to 260bhp and 360Nm, a gain of 35bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.