The Volkswagen Polo 1.4 TDI 70hp (2005 - 2009 ( 9N3 )) produces 70bhp and 155Nm in standard form. Our Stage 1 ECU tuning file raises output to 100bhp and 245Nm, a gain of 30bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.