The Volkswagen Phaeton 5.0 TDI V10 313hp (All) produces 313bhp and 750Nm in standard form. Our Stage 1 ECU tuning file raises output to 365bhp and 900Nm, a gain of 52bhp and 150Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.