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 ...

Welcome back for our second look inside the mysterious black box that we call the Ford EEC system. Last month we covered the basics of EFI, with an emphasis on the Ford systems. This month we'll delve ...

Why two neighbors with identical engines ended up on opposite sides of a decades-long feud.

Yoshimura has just released the next generation in fuel management systems for fuel injected off-road motorcycles and ATVs the PIM-2 (Peripheral Interface Module). According to Yoshimura, the PIM-2 ...

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 ...

The key ingredient to maximizing the peak performance of a diesel engine is increasing the amount of diesel being burned. On old mechanical-injection engines, the only way to do this was to modify the ...

This Swedish brick's previous owner ditched the original K-Jet carb for a Holley EFI. Here's why that was a bad call, and why ...

The earliest and simplest type of fuel injection, single-point simply replaces the carburetor with one or two fuel-injector nozzles in the throttle body, which is the throat of the engine’s air intake ...

Most new petrol cars you see today are equipped with fuel injection systems or injector motors. These have almost wholly supplanted older carburetor motors. They are more reliable, effective, and ...