The Audi Q3 2.5 TFSI RS 310hp (U8 - 2011 - 2015) produces 310bhp and 420Nm in standard form. Our Stage 1 ECU tuning file raises output to 420bhp and 620Nm, a gain of 110bhp and 200Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.