Holley Sniper 2 EFI 4BBL Self Tuning System with PDM and Fuel Pump Kit, Black (HO550-511-3PK)
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:
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  • 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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Kenneth
San Leandro, US
★★★★★ 5
Works great, keeps the light out of my eyes and easy to put together
Size: 1 Panel, Size: 1 Panel
I got this room divider in and it works great. It’s really easy to put together you don’t even need tools. I really like that it’s not see through, it’s not a black out curtain but it keeps light out pretty good. I absolutely hate my bedroom layout there’s no bathroom door. My girlfriend and I have different work schedules so I’m trying to sleep while she’s getting ready for work and the light shines right in my eyes. This divider keeps the light out of my eyes and that’s exactly what I was hunting for. I also like that you can adjust the length. I took one of the bars out to make it a little shorter and it worked great. I would recommend this room divider.
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Reviewed in the United States on February 26, 2026
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Mike Xu
New York, US
★★★★★ 5
A Versatile & Stylish Solution for Instant Privacy and Space Definition
Color: Black
This AKTOP Room Divider is an absolute game-changer for creating flexible spaces in my open-plan apartment. The 71"x71" single panel is substantial, providing excellent visual privacy without making an area feel completely closed off. The sleek, minimalist black frame looks modern and professional, easily blending into my home office and living area. I've used it to section off a dedicated workspace, creating a psychological barrier from household distractions, and it works equally well as a stylish backdrop for video calls. What I love most is its freestanding and portable design. It requires no tools, drilling, or installation—I simply unfold it and place it wherever I need a temporary wall. It feels remarkably stable and well-made, with a sturdy metal frame and durable fabric that doesn't sag. The size is perfect for most applications. Whether you need to divide a dorm room, create a private nook in a studio, or set up a temporary partition in an office, this screen delivers fantastic functionality and style with zero commitment. It's a brilliantly simple and effective product.
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Reviewed in the United States on February 5, 2026
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Kent Lee
Charlottesville, US
★★★★★ 5
Turning One Big Room into Two
Color: Black
My apartment is basically one big open space, so my living room, dining table, and “office” used to all blend together. After I got this screen, the whole layout finally makes sense. I set it up in the middle and now I have a clear work side and a chill side, and my background for video calls looks way more professional. This divider is a fixed style, so when you set it down it forms a nice straight line. Visually it really feels like a light, mini wall, which is perfect for breaking up a large area. It’s tall and long enough that it actually blocks what you want to hide, so you get real privacy, not just a decorative panel. The woven texture looks nice up close and doesn’t feel cheap, and the color is easy to match with other furniture. It’s not overly heavy either and I can slide it to a new spot by myself when I want to change the room layout. Most days I pull it out as a clean background for meetings and classes, and when I don’t need it as a divider I just move it against the wall and it still looks good there. If you have a big open room or a rental and want to create separate zones without doing any construction, this screen is a simple, effective solution. I’m already recommending it to friends who need more privacy in their space.
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Reviewed in the United States on December 29, 2025
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GARY VAN BUSKIRK
Louisville, US
★★★★★ 4
AKTOP Room Divider, Freestanding
Color: Black
AKTOP Room Divider, Freestanding ...all parts fit well and easy to assemble and looks great. Using it for church & move back & forth weekly. Screws come out so I reinforced legs. Better if you don't move around a lot or you will need to reinforce legs. Priced well.
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Reviewed in the United States on March 24, 2026
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Carl
Carnegie, US
★★★★★ 5
Worth the purchase
Color: Black
Very easy to set up and one setup provided great privacy for viewing not so much for sound but that's expected and the reason why I got it
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Reviewed in the United States on April 12, 2026

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