The Infiniti G37/M37 3.7 V6 331hp (All) produces 331bhp and 366Nm in standard form. Our Stage 1 ECU tuning file raises output to 345bhp and 380Nm, a gain of 14bhp and 14Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.