The Volkswagen Lupo 1.6i 16v GTI 125hp (1997 - 2005) produces 125bhp and 152Nm in standard form. Our Stage 1 ECU tuning file raises output to 135bhp and 170Nm, a gain of 10bhp and 18Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.