Nitrous oxide, often called NOS in car culture, is a colorless gas that can dramatically increase engine power by delivering more oxygen into the combustion chamber. When injected into an engine, ...

Like many wonderful and useful scientific things, nitrous oxide was discovered by accident in 18th-century England, and much later (during the '30s and '40s) it was used by dentists as an anesthetic.

The never-ending quest for horsepower centers around air. Popular modifications allow an engine to pump more air by means of efficient induction components or longer valve-opening events. Other ...