The Volkswagen Fox 1.4 TDI 70hp (2005 - 2011) produces 70bhp and 155Nm in standard form. Our Stage 1 ECU tuning file raises output to 90bhp and 200Nm, a gain of 20bhp and 45Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.