SAAS 52mm (2”) Air Fuel Ratio Gauge
Narrow Band Black Dial with Gunmetal Grey Bezel SG-AF52B


SAAS began just over 65 years ago and have brought to the market quality products at affordable prices. The reason for the company’s success has come from committed staff with a combined experience of over 100 years in the Automotive Aftermarket Retail, Trade, Wholesale and Distribution. SAAS believe that no matter the application, the driver should have a handle on their vehicle’s vitals at all times. Their range of instruments completes that task and delivers the information the driver needs accurately and promptly whilst giving the cockpit true functionality and form.

Now you can get a live indication of your engine's air/fuel ratio with the SAAS Muscle Series Narrow Band Air Fuel Ratio gauge!

What is Stoich, Rich and Lean and what do they indicate?
Stoich, rich, and lean are terms that we use to describe the burn ratio of fuel to air in the combustion chamber. The perfect ratio for good combustion of every fuel is called stoic(h). A stoic(h) value will always give the motor a good clean burn while taking fuel mileage into account as well.

Rich refers to conditions in the air fuel value where there is more fuel present than is ideal to the air content. Rich conditions will cause the burn to use more fuel but can also offer more power at the same time.
 
Lean refers to conditions in the air fuel value where there is more air than fuel. This causes the combustion to occur rapidly and burn much hotter. While this is great for gas mileage, often the vehicle will be down on power and become dangerous to the motor's internals.


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