The Audi A4 3.0 TFSI 290hp (B8 - 2008 - 2011) produces 290bhp and 420Nm in standard form. Our Stage 1 ECU tuning file raises output to 400bhp and 520Nm, a gain of 110bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.