The Audi A4 2.0 TDI CR 143hp (B8 - 2008 - 2011) produces 143bhp and 320Nm in standard form. Our Stage 1 ECU tuning file raises output to 185bhp and 410Nm, a gain of 42bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.