Air fuel gauge helps you keep track of the air to fuel ratio that the engine receives. It gives you considerable advantage as you are able to keep track of the oxygen to fuel levels. Optimum mixing and pressure of air and fuel facilitates complete burning of the fuel. Air fuel gauge is a must for all vehicles equipped with a turbo booster.

Air fuel gauge either can come with a dial and needle design or with LED lights. LED blinking at the bottom only tells lean oxygen supply, whereas high levels indicate rich airflow.

Air fuel gauge helps you optimize your tuning to the engine, without going to the extremes of drilling a hole in the piston. Set the air intake to rich and you know when there air supply goes rich. When it goes leaner, as it always would, you can lift your right foot, a bit, for quite a while.

LED style air fuel gauge normally comes with 10 or 20 LEDs. Needle against dial comes with contrasting colours for the dial and the needle for easy perception.

With a little practice with air fuel gauge, you can achieve significant fuel savings and emission curbs, while actually improving engine performance and engine life. Careful air fuel ratio mapping through the ranges of rpm and manifold intake pressure allows you to maximise engine performance, while ensuring engine longevity.

You can easily fine lean mixtures working fine while cruising at good pace. You will also learn how to minimise the emission of hydrocarbons.