How to clean fuel injectors yourself, and check if they really need it

To save time and money, you might want to learn how to clean fuel injectors without needing to rely on professionals. But do ...
Jalopnik

Why Some Engines Have Both Port And Direct Injection

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 ...
Hot Rod

Explained: Direct Injection Piston Design and Tuning Theories

There's a new acronym floating around the performance industry—GDI—and it stands for gasoline direct injection. Among domestic production engines that have jumped heavily into the GDI segment are the ...
Motor Authority

Why some engines use direct and port injection

Every new car sold in the United States today uses fuel injection, but not all fuel injection systems are the same. Some cars use port injection, while others use direct injection. Some even use both.