The Volkswagen Polo 1.4 TDI 75hp (2001 - 2005 ( 9N )) produces 75bhp and 195Nm in standard form. Our Stage 1 ECU tuning file raises output to 100bhp and 245Nm, a gain of 25bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.