SKU: 59114745016

Holley Sniper 2 EFI Self-Tuning Fuel Injection System Master Kit # HO550-511-3XK

Sale price$1552.50 Regular price$1725.00
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Description

Holley Sniper 2 EFI Self-Tuning Fuel Injection System Master Kit # HO550-511-3XKFuel Injection Systems, Sniper 2 EFI, Self Tuning, Throttle Body, Black, 4150 Flange, 800 cfm, Fuel Pump, External Fuel Regulator, Kit Fuel Injection Style: Throttle body Fuel Injection System Type: Single 4 Barrel Throttle Body (4150 Flange) Maximum Horsepower with Gas: 650 Timing Control Compatible: Yes Power Adder Compatible: Yes ECM Included: Yes Self Tuning: Yes User Tunable: Yes Fuel Pump Included: Yes EGR: No Transmission Controller Included:

Fuel Injection Systems, Sniper 2 EFI, Self-Tuning, Throttle Body, Black, 4150 Flange, 800 cfm, Fuel Pump, External Fuel Regulator, Kit

Fuel Injection Style:

Throttle body

Fuel Injection System Type:

Single 4-Barrel Throttle Body (4150 Flange)

Maximum Horsepower with Gas:

650

Timing Control Compatible:

Yes

Power Adder Compatible:

Yes

ECM Included:

Yes

Self Tuning:

Yes

User Tunable:

Yes

Fuel Pump Included:

Yes

EGR:

No

Transmission Controller Included:

No

Metering Style:

Speed density

Intake Manifold Included:

No

Multi-Port Fuel Rails Included:

No

Throttle Body Included:

Yes

Throttle Body Mounting Flange:

4-barrel square bore

Venturi Quantity:

4

Airflow Rate (cfm):

800 cfm

Throttle Body Material:

Cast aluminum

Throttle Body Finish:

Satin black

Injectors Included:

Yes

Injector Size (lbs/hr):

100 lbs./hr.

Calibration Module Included:

Yes

Wiring Harness Included:

Yes

Oxygen Sensor Included:

Yes

Fuel Pressure Regulator Included:

Yes

Distributor Included:

No

MAP Sensor Included:

Yes

IAT Sensor Included:

Yes

TPS Sensor Included:

Yes

IAC Motor Included:

Yes

Quantity:

Sold as a kit.

Holley Sniper 2 EFI Self-Tuning Fuel Injection Systems

Holley Sniper 2 EFI self-tuning fuel injection systems are perfect for street rods, muscle cars, off-road trucks, or nearly any carbureted vehicle. They can put an end to cold start issues, hesitations, vapor lock, and flooding. The systems are available in standard tuning kitsor the Master kit that includes an external fuel pump. Choose from a polished or satin black finish on the throttle body.

Additional product features:

* Dual pattern bolt on carburetor replacement, designed to fit 4150 flange and spread bore manifolds
* Throttle body mounted ECU no extra boxes to mount
* Supports up to 650 hp with four 100 lb.-hr. injectors
* Only 4 wiring connections required (battery +, battery -, switched ignition, and RPM)
* Integrated ignition timing control and coil driver
* High-resolution full-color touch screen for initial setup, tuning, and gauge displays
* Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own); NO laptop required
* Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI
* Available in base and Master kits (Master kits include complete fuel system, consisting of 20 ft. of 3/8 in. vapor guard fuel hose, 12-920 fuel pump, filters, necessary hardware, and bulkhead fitting to return fuel into the tank)
* The included Genuine Bosch LSU 4.9 wideband oxygen sensor provides real-time fuel map learn
* OEM-style TPS/IAC and fuel pressure regulator for years of dependable service
* Included clamp-on oxygen sensor kit ensures a leak-free oxygen sensor installation, with stainless steel T-bolt clamps and a stainless steel (weldable) oxygen sensor flange.

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: 59114745016

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Emma DG
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★★★★★ 5
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These exfoliating pads leave the skin feeling noticeably smoother and cleaner after use. They work especially well for oily or combination skin types that struggle with excess sebum, clogged pores, or uneven texture. I like that the formula combines both natural BHA from white willow bark and AHA ingredients for gentle exfoliation without feeling overly harsh. The pads help remove buildup and excess oil while making pores appear cleaner and more refined over time. The lavender scent adds a calming and spa-like feel to the skincare routine, and the pads feel soothing instead of irritating during use. The dual-sided design is also helpful since the textured side provides exfoliation while the softer side helps smooth and prep the skin afterward. Another nice feature is how convenient and quick they are to use after cleansing, especially for busy routines or nighttime skincare. Minor note: People with very sensitive skin may want to start using them a few times a week first before increasing frequency. Overall, a refreshing and effective exfoliating pad that helps improve skin texture, reduce excess oil, and leave the skin feeling clean and balanced.
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Reviewed in the United States on May 22, 2026
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Maria
Lake Worth, US
★★★★★ 5
Ive been ordering these for years now
Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
I’ve been using these toner pads twice a day and they’ve worked really well for my skin. Since using them consistently, my acne has stayed under control much better than before. The pads feel gentle and don’t irritate my skin at all. I also like how convenient they are compared to using separate toner and cotton pads. My skin feels cleaner and smoother after each use. The container stays sealed well so the pads don’t dry out quickly. Overall, these have become a staple in my skincare routine.
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Reviewed in the United States on May 21, 2026
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Renee
Boise, US
★★★★★ 5
The Biggest Visible Change I’ve Seen in My Skin in Years
Color: Zero Pore Pads, Size: 70 Count (Pack of 1), Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
If I could only keep one skincare product, it would honestly be these pads. Even after trying peels, tools, clay masks, exfoliants, and retinol, this is the most noticeable improvement I’ve seen in my skin. I’m in my 50s and have tried a lot of skincare over the years — pore strips, clay masks, exfoliants, retinol, you name it. Very few products have made a noticeable difference in my skin, but these absolutely have. My biggest concern has always been the pores on my nose. They’ve looked enlarged for years and it’s something I’ve been self-conscious about. After using these pads, the difference was surprisingly visible — my pores looked tighter, my skin texture smoother, and my nose looked noticeably clearer. I added a close-up photo because this is where I’ve seen the biggest difference — my pores look visibly tighter and clearer What impressed me most is that I saw improvement right away, but the results actually kept getting better with consistent use. After about a month, my skin looks more refined overall and my nose pores appear much smaller than they used to. I also have sensitive, combination skin, so I’m careful with exfoliating products. These have been very gentle for me. The pads are thin but well saturated (not dripping), and I like using the textured side first to exfoliate, then flipping to the smooth side to finish. There’s no strong fragrance and they haven’t irritated my skin. Another unexpected benefit is how much better my makeup applies now. Foundation sits more smoothly and doesn’t settle into my pores the way it used to. After years of trying different skincare products, this may honestly be the one that has made the most noticeable change in my skin. If enlarged pores on your nose bother you like they did me, this product is absolutely worth trying. This is one of the few products that has genuinely shocked me with how well it works! I’ve been telling everyone I know and I’m not a spokesperson! I’m just impressed and happy to find something that works so well! 🩵
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Reviewed in the United States on March 15, 2026
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Dallas, US
★★★★★ 5
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Color: Wa 26 Ball-200, Size: 200Pcs
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Reviewed in the United States on April 25, 2026
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BDH
Pawtucket, US
★★★★★ 5
Premium Quality, Beautiful Puzzle
Color: Usa Ball-200, Size: 200Pcs, Color: Usa Ball-200, Size: 200Pcs
I will preface this by saying that I am not usually a big fan of puzzles. Puzzles I’ve done in the past are too flimsy and there’s been too much guesswork about whether pieces actually go together. But As a huge fan of the World Cup, this puzzle was a must-have. It far exceeded my expectations! The craftsmanship is outstanding. Each of the pieces is made from thick, high-quality wood (the 5mm thickness really makes a difference), giving it a premium feel that you don’t get with standard cardboard puzzles. There’s a satisfying feel when 2 pieces go together. It actually felt like an accomplishment to finish the whole thing. The fact that it comes with a backing that allows you to permanently fix it in place and display it is another added touch that I loved. It’s just under 12 inches in diameter once complete, which looks great on the wall if you decide to hang yours once finished. I think it’s a great value when compared to standard cardboard puzzles. You can tell that there is actually a lot of thought placed into creating this puzzle. What really sets this puzzle apart are the unique piece shapes. There are about 10 pieces that are made in themed shapes, like the Statue of Liberty, soccer players, a cleat, etc. Somehow, despite these pieces being there, the puzzle was still a challenge which took me about 2 1/2 hours to finish. This would make an amazing gift for any soccer fan or puzzle enthusiast, especially with the excitement building around the 2026 tournament.
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Reviewed in the United States on March 24, 2026

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