The Volkswagen Polo 1.9 SDI 64hp (2001 - 2005 ( 9N )) produces 64bhp and 125Nm in standard form. Our Stage 1 ECU tuning file raises output to 75bhp and 145Nm, a gain of 11bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.