The Volkswagen Polo 1.4 TDI 90hp (2014 - 2017 ( 6C )) produces 90bhp and 230Nm in standard form. Our Stage 1 ECU tuning file raises output to 115bhp and 280Nm, 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.