When factory electronic fuel injection (EFI) first hit the Mustang in the 1980s, many enthusiasts felt it would be the death knell for performance. Little did any of us know at that time that there was really nothing to worry about, and that we’d have Mustangs today rolling off the assembly line in excess of 400 horsepower (and more for specialty models like the supercharged Shelby GT500s from 2007-2013). Sure there were some problems early on as owners and the performance aftermarket figured out these OE systems and how to get the most out of them, and the same can be said for aftermarket bolt-on EFI solutions. Over the years, the options to convert your carbureted engine to EFI have been many. From using the intake, injectors, wiring, and sensors from the ’87-’93 Fox Mustang to early throttle-body injection (TBI) units based off of GM truck units, there always seemed to be teething problems and a learning curve. However, over the last five years or so the bolt-on EFI game has really entered the next chapter, if you will, allowing anyone with basic mechanical abilities to be able to enjoy the benefits of modern fuel injection on their classic Mustang. The aftermarket systems h...