What Is A Supercharger?

Have you ever heard the expression "there's no replacement for displacement"? Well, it used to be true. Naturally aspirated engines used to be the only kind, and you needed more capacity to produce more power. As the earliest way of improving performance, it was the most common. But now we have forced induction, which is the term given to a system that increases intake air pressure above that of the ambient atmospheric pressure.
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