The Mazda MX-5 1.5 SkyActiv-G 131hp (2015 ->) produces 131bhp and 150Nm in standard form. Our Stage 1 ECU tuning file raises output to 141bhp and 158Nm, a gain of 10bhp and 8Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.