The Volkswagen Jetta 1.6 FSI 115hp (2005 - 2011) produces 115bhp and 155Nm in standard form. Our Stage 1 ECU tuning file raises output to 125bhp and 170Nm, a gain of 10bhp and 15Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.