And as any race fan knows, there's no such thing as too much power. Give It Some Boost. Carmakers have been adding superchargers and turbochargers to relatively small engines to make them feel like big engines for years.
Many vehicles perform as if their engines are sipping air through a tiny straw.
Installing a high-flow air filter or mass air sensor will remove some of the restrictions in the intake system, so the engine can draw bigger breaths and make more power. In fact, a simple change in air filters can be good for up to 15 horsepower, and reusable filters reduce waste heading to landfills, too. Let It Out. Just as an engine must inhale, it needs to exhale. Exhaust enhancements not only add horsepower, they typically increase gas mileage and reduce emissions, too.