The Audi A4 1.4 TFSI 150hp (B9 - 2015 - 2018) produces 150bhp and 250Nm in standard form. Our Stage 1 ECU tuning file raises output to 190bhp and 330Nm, a gain of 40bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.