The Vauxhall Tigra 1.8i 16v 125hp (2004 - 2010) produces 125bhp and 165Nm in standard form. Our Stage 1 ECU tuning file raises output to 135bhp and 180Nm, 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.