When people talk about the air/fuel ratio of their engine, do you get confused? Do they really know what they're talking about, or did they just hear someone mention it in another conversation?

Imagine being able to park your Mustang's drippy, persnickety carburetor on the shelf and have cleaner, more efficient fuel injection without anyone knowing it's there. Think we're shrink-wrapped?

Tuning your engine with the aid of an air/fuel meter can really help you dial in your carburetor. But what numbers should you aim for? When people talk about the air/fuel ratio of their engine, do you ...