The Hyundai Sonata 2.0 T-GDI 248hp (All) produces 248bhp and 353Nm in standard form. Our Stage 1 ECU tuning file raises output to 300bhp and 450Nm, a gain of 52bhp and 97Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.