Because of this, an air fuel ratio gauge, like the Innovate DLG-1 we’re installing in this story, is a fantastic tuning tool to tell you where your AFR is and how it changes over different rpm ...

Air/fuel gauges and wideband sensors became commonplace, to the point where today, every other Mustang has an air/fuel gauge in it. And that includes our Terminator-swapped 1994 Cobra.

Get instant readings on your temp, air/fuel ratio, oil pressure, and more for as little as $10.