The Audi Q7 4.2 TDI 340hp (4L MK2 - 2010 - 2014) produces 340bhp and 760Nm in standard form. Our Stage 1 ECU tuning file raises output to 390bhp and 880Nm, a gain of 50bhp and 120Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.