The fuel pressure regulator may be small, but it plays a big role. Learn what it does for your engine and how a failing one can affect performance.

An ultra-high-performance engine, whether in a NASCAR, a Pro Stocker, or even a heavy-duty street machine, needs an incredible amount of fuel to do what it's supposed to do at high speeds.

When you turn the tap water on at home to run a bath or do the dishes, you might not realize that the water flowing from the faucet comes out at a controlled pressure. This is due to the water ...