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 ...

Everybody realizes the importance of an engine, but something that's equally crucial, if not more, is the fuel delivery. Only the right mixture of fuel and air can ensure efficient performance with ...

A classic car is more than a way to get from A to B. It is a rolling time capsule, and few parts define its character as strongly as the way it breathes and burns fuel. The argument over whether a ...

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 ...

Automobile engines have undergone tons of changes over the years, primarily to make them more efficient. For the most part though, engine changes result from a string of iterative improvements on ...

Gasoline direct injection (DI) engines have been lurking in the shadows of gasoline-burning, internal combustion engine development for decades but are now becoming mainstream. This is all good, as DI ...

If you own an '81-'90 4.2L (258ci)-powered Jeep, there's something lurking behind your local Mopar dealer's parts counter that will interest you. It's called the Mopar Performance Jeep 4.2 Liter ...

The system supports calibration, homologation and customer-specific tuning. Marelli has launched a new range of port fuel injection engine control units (PFI ECUs) designed for gasoline, flex fuel and ...