The Audi A4 2.0 TFSI 225hp (B8 - 2012 - 2015) produces 225bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 300bhp and 450Nm, a gain of 75bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.