The Volkswagen Jetta 1.8 TSI 170hp (2011 - 2014) produces 170bhp and 320Nm in standard form. Our Stage 1 ECU tuning file raises output to 220bhp and 380Nm, a gain of 50bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.