The Audi A6 3.0 TFSI 290hp (C6 - 2008 - 2010) produces 290bhp and 420Nm in standard form. Our Stage 1 ECU tuning file raises output to 435bhp and 535Nm, a gain of 145bhp and 115Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.