The Audi A4 2.0 TDI CR 120hp (B8 - 2012 - 2015) produces 120bhp and 290Nm in standard form. Our Stage 1 ECU tuning file raises output to 185bhp and 410Nm, a gain of 65bhp and 120Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.