What does a throttle body spacer do?
A throttle body spacer is a small block of aluminum that is bolted on top of a vehicle’s throttle body, that has a port or multiple ports in the center of it. Most spacers these days also have either a helical cut along the walls of the port(s) or serrated edges, which help the air/fuel mixture to become more turbulent. This turbulence causes the air and fuel to more thoroughly ‘mix’, resulting in a more complete combustion inside of the engine cylinders, less wasted fuel, and a moderate gain in horsepower. Most spacers cost between $50-$100 and are available for most vehicle applications.
