The Mercedes A 170 CDI 90hp (W168 - 2001 - 2004) produces 90bhp and 180Nm in standard form. Our Stage 1 ECU tuning file raises output to 115bhp and 230Nm, 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.