The Volkswagen Touareg 4.0 V8 TDI 422hp (2018 ->) produces 422bhp and 900Nm in standard form. Our Stage 1 ECU tuning file raises output to 480bhp and 1000Nm, a gain of 58bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.