The Lexus GS 250 - 209hp (2012 - 2016) produces 209bhp and 253Nm in standard form. Our Stage 1 ECU tuning file raises output to 230bhp and 275Nm, a gain of 21bhp and 22Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.