In its purest form, an engine is nothing more than an air pump; it takes in air and then returns it, although in a slightly modified form. Maximizing an engine's ability to process air will also ...

Trident Emergency Products’ AirMax Intake Relief Valve is an air-operated, remote-controlled intake relief valve design with panel control adjustment from 50 to 300 PSI. Competitive remote-controlled ...

Carburetors with vacuum lines are still found on classic vehicles and small-displacement engines — but what is the vacuum actually used for? Let's take a look.

Variable valve timing and variable valve lift may sound similar, but they're entirely different. Here are the differences between them and how they work.