The Audi A4 1.8 TFSI 120hp (B8 - 2012 - 2015) produces 120bhp and 230Nm in standard form. Our Stage 1 ECU tuning file raises output to 210bhp and 340Nm, a gain of 90bhp and 110Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.