SKU: 1869458930

Holley Sniper 2 EFI 4BBL Self Tuning System with PDM and Fuel Pump Kit, Black (HO550-511-3PK)

Sale price$1947.60 Regular price$2164.00
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Description

Holley Sniper 2 EFI 4BBL Self Tuning System with PDM and Fuel Pump Kit, Black (HO550-511-3PK)HO550 511 3PK HOLLEY SNIPER 2 EFI BLACK 800 cfm 4 Injector Throttle Body, 650 HP N A Part Number: HO550 511 3PK The #1 EFI conversion system just got better! Introducing Sniper 2 EFI a self tuning, easy to install, EFI conversion for common 4 barrel (4150 flange) style carburetors. We took everything that we learned from the original Sniper EFI system and added 14 new features that will make your EFI conversion more simple, reliable, and modern. Like

HO550-511-3PK - HOLLEY SNIPER 2 EFI BLACK

800 cfm 4 Injector Throttle Body, 650 HP N/A

Part Number: HO550-511-3PK

The #1 EFI conversion system just got better! Introducing Sniper 2 EFI - a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. We took everything that we learned from the original Sniper EFI system and added 14 new features that will make your EFI conversion more simple, reliable, and modern. Like all Sniper EFI systems, Sniper 2 is designed to work with the Sniper Ecosystem that includes Hyperspark ignition, complete fuel systems, multiple user interfaces/dash displays, and more.
New for Sniper 2 is the optional Power Distribution Module (PDM). This cost-effective and optional accessory isolates the core of your EFI and ignition wiring into one, easy-to-use location. Simply slide the stripped wire ends under the positive lock connector and tighten down the set screw. Battery and a switched 12-volt source is all that's required from your vehicle to power the PDM and your Sniper EFI.
Make your classic drive like a modern fuel-injected vehicle, including easy cold starts, smooth drivability, and improved fuel economy! Sniper 2 is designed to be installed at home in your garage with limited tools and the support of Holley's comprehensive installation manual and videos. The user-friendly setup wizard allows you to answer a few simple questions about your engine and the system will begin self-tuning with no laptop or tuning experience required.
If you're looking for a high-performance fuel injection system that delivers power, efficiency, and ease of use, look no further than the Sniper 2 EFI.
Main Features:

All new design - the #1 EFI Conversion just got better!
Only four wiring connections required: Battery+, Battery-, Switched Ignition, and RPM
Calibration wizard only requires that you answer a few simple questions about your engine to create a base map and begin self-tuning - No laptop required
Supports up to 650hp naturally aspirated or 575hp on boost with four 100 lb/hr injectors
(NEW) Next generation ECU features improved RF noise and interference resistance (stands up to old car wiring, noisy alternators, faulty plug wires)
(NEW) Redesigned throttle shaft and plate geometry for a smoother throttle feel
Sniper 2 is Part of the Sniper EFI Complete Ecosystem
Sniper 2 is compatible with the complete Sniper EFI Ecosystem that includes plug-n-play Hyperspark Ignition systems (coil, ignition box and distributor), fuel systems (fuel lines, fuel pump hangers), multiple displays and more
(NEW) Main harness includes plug-and-play HyperSpark distributor support, for integrated timing control, making your ignition setup hassle free
(NEW) Adaptors for other ignition types sold separately: 558-329 CD Box to Sniper 2, 558-330 MSD Pro Billet / Crank Trigger to Sniper 2

(NEW) Wide Variety of tuning and gauge display erfaces: from a 3.5-inch full color LCD Handheld, 5-inch Digital Dash, or the Bluetooth dongle, which allows you to connect either an iOS or Android based cell phone to your Sniper 2

(NEW) Optional Power Distribution Module (PDM) further simplifies wiring, especially when used in conjunction with an ignition system
Available with fuel system kits: a complete fuel system consisting of: 20 ft. of 3/8 in. Vapor Guard Fuel Hose, Fuel Pump, fuel pressure regulator, filters, necessary hardware, and bulkhead fitting to return fuel into the tank

Additional Features:
(NEW) Integrated transmission kick down provisions for GM TH350/400, 200-4R/700R4 and Ford C4/C6 applications

(NEW) "Hidden Harness" wiring harnesses exits from the rear of throttle body for a clean appearance
(NEW) Inputs and outputs consist of: 2x Ground Inputs, 2x Ground Outputs, 1x TPS output (0-5v), and 1x Tach Output
(NEW) Redesigned injector connector for improved

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 1869458930

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4.6 ★★★★★
Based on 15 reviews
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Susan Esposito
Port Orchard, US
★★★★★ 5
Great plug!
Style: Type E/F-Germany France
It worked very well in France ! It is something that I will use for years to come !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2025
S
Verified Purchase
Shopper00
Battle Creek, US
★★★★★ 1
US plugs didn’t work
Style: Type E/F-Germany France
Got all the way to Europe only to have the US plugs not work. Couldn't get any to work and the plugs did not go in. Only usb worked. Skip it. Now i have to lug it home for a refund.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2023
R
Verified Purchase
Rain
Lexington, US
★★★★★ 5
Bought for my upcoming European Vocation
Style: Type E/F-Germany France, Style: Type E/F-Germany France
I need a European plugadapter to use in Cruise. It seems to be permitted in a Carnival cruise line. This things has a super short power cord, so that it can hang a bit below a European wall outlet. That's a good design so that you won't block the neighbouring outlet. it's lightweight so I can put it in my baggage. the USB C ports is an essentials as it seems that other USB ports are not allowed to use in Europe after a few years. Anyway, this things is recommeded
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 29, 2022
A
Verified Purchase
Alicia Ring Thomas
Draper, US
★★★★★ 5
Nice
Really nice provide. Not too large. Holds 3 passports comfortably— 4 tightly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2025
T
Verified Purchase
Tex
Pawtucket, US
★★★★★ 4
Great for keeping family passports organized while traveling
I bought this for our family’s recent trip to Europe after struggling on a previous trip to keep track of everyone’s passports. Last year I was constantly worried about losing one or forgetting where I put them, so having everything in one place made a huge difference this time. This holder fit all four passports perfectly and still had room for cards and even a spot where I could clip my keys inside. It ended up being one of those things I used constantly throughout the trip at airports, hotels, train stations, and checkpoints. As long as I had the case with me, I felt confident all four passports were where they needed to be. The material feels durable enough for travel, and the zipper worked smoothly the whole trip. The black color also looks clean and professional without standing out too much. Pros: Holds four passports comfortably Helped keep travel documents organized Durable feel and smooth zipper Extra storage for cards, cash, or keys Lightweight enough for travel Gave me peace of mind during a busy international trip Cons: Slightly bulkier than necessary for minimalist travel Could be slimmer for people who only want passport storage without extra pockets
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026

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