The first thing you should understand is that direct-port, constant-flow fuel-injection—Hilborns, En-derles, Crowers, whatever—were never designed, nor intended, to be run on the street. All of these ...

When the auto manufacturers first introduced their newfangled multiport fuel-injection systems, many hot rodders feared that the days of performance tuning and tweaking were gone. However, nothing was ...

QUESTION: I was having a conversation about cars with my 14-year-old son, and the topic of fuel injection came up. He wanted to know how it works, and I began to tell him but then realized I was ...

Port fuel injection (PFI) was a major milestone in the early '80s. The integration of PFI rapidly changed the way fuel was delivered by increasing fuel economy and improving engine performance. Even ...

Most modern vehicles use either port fuel injection or gasoline direct injection systems. Port fuel injection sprays fuel into the intake manifold before it enters the cylinder. Gasoline direct ...