I've installed a lot of Sniper kits and most of the time they work just fine. I did run into one unit that had RF issues. Summit replaced that one under warranty and the replacement worked fine. The Snipers work okay for a low dollar EFI unit. They are better than some of the other choices on the market but they aren't the best EFI option available. The Holley Terminator X Stealth is only $200 more expensive than a Sniper and it has fewer problems but some customers don't want to spend the extra $200.