Holley sniper efi

I don’t know what your skill level is but since you’re asking in a very general manner, it’s probably not worth it.

First and foremost, you will need a thorough understanding of electrical systems and must be competent at wiring. Most aborted installs are because of wiring-related failures. I’ve seen it happen enough where guys “think” they know how to deal with wiring but really don’t. You can’t twist wires together and wrap tape around it, no quick splices, no piggy backing stuff off the fuse box, etc.

Also, if the wiring in the car is original it’s probably a good idea to completely rewire it. Would also be a good idea to upgrade your alternator too. The first Snipers are susceptible to RFI and suspect/poor wiring will only increase the chances of it happening.

The Sniper itself is just the start though. You’ll need to figure out a suitable fuel delivery system that is capable of providing the proper EFI pressure. In tank pumps are best but you can get by with an external one but they tend to be noisy.

It’s also kind of a waste to try and run the Sniper with a non-EFI ignition system since in general you won’t be able to control the timing. Controlling timing is one of the main benefits of the system so to run without it is kind of pointless.

You’ll also need to be willing to tune with a laptop if you really want to get your tune as sharp as possible. Most guys don’t get past the generic “Wizard” tune and end up leaving a lot on the table.

A lot of people believe the marketing and go into these systems thinking it’s some magic box that will make the car run perfect without lifting a finger but that couldn’t be further from reality. If your engine sucks with a carb, chances are it will suck with EFI.

If you’re into that scenario, go for it. If not, it’s probably not worth the time and effort.