Most common types of electronic fuel injection (EFI) conversion kits rely on a single throttle body to deliver fuel into the intake manifold—very much like a traditional carburetor. But a lot of modern engines use something called multi-port fuel injection (MPFI) in which multiple injectors are used, often placed further downstream in the manifold, directly
It’s no secret that aftermarket electronic fuel injection (EFI) systems are becoming more and more commonplace. It should come as no surprise however, that some of the early systems were a bit complex—you had to know your way around a laptop computer to make the thing function, and even then many of the systems weren’t
If you’re researching electronic fuel injection (EFI) systems, you’ve probably come across the terms speed density and mass air flow (MAF). These are the two most prevalent types of fuel injection metering methods that an EFI system uses to calculate air/fuel ratio. (Some vehicles even use a combination of the two.) Though there is other
In the past few years, the automotive aftermarket has really stepped-up to provide engine builders and hot rodders with modern fuel injection conversion kits that are both easy to install and easy on the wallet. Until now however, most of those EFI conversion kits were designed for folks running 4-barrel carburetors. But, since we said
Converting from a carburetor to electronic fuel injection can be both easier and less expensive than some believe, and the Holley EFI unit we’re exploring today is a shining example of that. First, we got up close and personal with MSD’s entry-level Atomic EFI—which simplified installation, eliminated the need for a laptop computer, and offered
Tuning is rewarding when you want to do it, but aggravating when you have to do it. Today’s self-learning fuel injection systems give us the best of both worlds. The injection units quickly learn what the engine wants to run at its best and offers additional tools for those who like to tinker. Three things had to happen for
It’s been a while since we’ve seen a new aftermarket part capture the attention and interest of so many performance enthusiasts. But that’s been the story of FiTech Fuel Injection since bursting on the scene with high performance throttle body EFI systems priced similarly to carburetors and setting new standards for ease of installation. First,
Does size really matter when it comes to fuel lines? According to the fuel delivery system experts at Fuelab, it does. It’s because fuel line size and length have a direct effect on the amount of fuel pressure drop your fuel system will experience. Too much pressure drop can inhibit the performance of both carbureted and EFI systems
With a growing number of performance enthusiasts choosing fuel injection over carburetion, FiTech Fuel Injection has created quite a buzz by offering throttle body EFI systems at prices as low as what you might pay for a carburetor. According to FiTech president Ken Farrell, FiTech leverages OE electronics, pairing them with high quality aftermarket street and performance
Learn how to install MSD’s Atomic EFI Fuel Injection System in your carbureted muscle car by watching this video which will walk you step-by-step through the installation process. Here, Steve Magnante shows you how he installed one of these systems in a 1964 Chevy Chevelle with a 300-horsepower 350 small block. The MSD Atomic features a
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