Holley 550-516K EFI Self-Tuning Master Kit

Fantastic product. So easy to install and so much better than carbs.The only downer is that since I installed it on a Rover V8, which is not your standard American application, the support was I was hoping to get from Holley to integrate my distributor with the Holley Sniper Ignition timing was non-existent.All is well using the stock mechanical/vacuum timing advance, but I think Holley is missing out providing solutions beyond the hard-core American market.

I ordered the 550-516K "Sniper TBI Master Kit - Gold" and it was shipped from Supershops to me. I just started the install and found out that all the parts aren't as stated. There was a small note in the install manual that says 520-1 is a complete install kit. Some minor parts for linkage missing and when checked fuel box for parts it has a universal pump and not the Sniper fuel pump. You can't rely on the advertisement to be correct. I pondered which one to buy for a month and talked to many techs from all brands and it was never disclosed about the 520-1.

Got what I paid for. Full kit with fuel lines and pump, as well as wiring and the unit itself

Totally different machine, starts right up, instant response, very satisfied.

Unit is easy to install and wire. I bought mine here and my buddy bought his at LMC Truck. Neither unit worked and had to be shipped back to Holley for diagnostics and repair. Holley has been great to deal with, but there is a bad batch of units out there that need to be fixed.

Works really well. Drives and idles better than it ever did with a carb.

Great product, complete kit for easy installation. Great communication by seller.

Fuel regulator was bad and spit fuel all over my engine bay. Working with Holley to get it replaced.

Complete crap do not buy bad units out there. And mine didn't work from new came broken and missing parts had to spend back to holley to be fixed 4 months ago still don't have it working

It went on a 302 ford engine in a 1966 Ford Falcon . Runs great !!