The Lexus IS 350i V6 311hp (2016 - 2020) produces 311bhp and 376Nm in standard form. Our Stage 1 ECU tuning file raises output to 320bhp and 399Nm, a gain of 9bhp and 23Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.