Review on 🚗 Holley Sniper EFI Self-Tuning Master Kit - 550-511K by Mike Castro

kit has just about everything you need to get the job done. If you have a large vehicle, e.g. a full size truck, you will need more fuel hose. The kit was 20 feet long, which sounds like a lot until you actually run it. I used my existing metal return so I didn't have to buy more. The return line only sees 3psi or less, so it's fine. You may need to purchase a plateless fuel pump assembly and I had to purchase a different alternator. the one on my truck was 63 amps. with EFI, fuel pump, electric fans and stereo amp I only saw 11.5/12.2 volts idling at 720 rpm. as well as where I saw 13.4 volts before switching to EFI. I replaced the alternator with a Powermaster 7294 that I found here at Revain for $115.