SKU: 41953275415

Holley Sniper 2 EFI Self-Tuning Fuel Injection System # HO550-511-3XX

Sale price$1192.50 Regular price$1325.00
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Description

Holley Sniper 2 EFI Self-Tuning Fuel Injection System # HO550-511-3XXFuel Injection Systems, Sniper 2 EFI, Self Tuning, Throttle Body, Black, 4150 Flange, 800 cfm, 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: No EGR: No Transmission Controller Included: No Metering Style: Speed density

Fuel Injection Systems, Sniper 2 EFI, Self-Tuning, Throttle Body, Black, 4150 Flange, 800 cfm, 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:

No

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:

No

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: 41953275415

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Saved
Pawtucket, US
★★★★★ 4
If the set screws were white the shelves would be perfect.
Color: C. White - Modern Minimalist Style, Number Of Shelves: 3, Size: 15.7inches
I'd give 4 1/2 if there was one. The shelves thwmself are nice I just don't like the visible little black set screws. The shelves themself look great and are not wobbly at all if you install correctly. I purposely installed the bracket upside down because of the little black setting screws; I didnt want them showing because the shelves are above eye level and the screws are black and I didn't want them showing. But that made the shelf lean amd wobbly so I turned them back over the way they are supposed to be and that made them level and sturdy. I guess I'll paint the little screws.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026
V
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Valentin
Los Angeles, US
★★★★★ 5
Floating shelves
Size: 30"W, 2P, Color: Black
Great product built to last. Package arrived on time and in great condition. Easy to install on wall. Light weight and well made.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
N
Verified Purchase
nikki a.
Port Orchard, US
★★★★★ 5
Modern and stylish shelves...very nice!!
Size: 30"W, 2P, Color: White
I got these floating shelves to go above matching dressers...very nice! I had a handman put them up, as I am not that handy with tools. Very impressive and modern!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
L
Verified Purchase
Lynne
Waukegan, US
★★★★★ 5
The floating shelves are great
Size: 24"W, 2P, Color: White
I finally found a complete set of Japanese tea cups. I had bought 2 in Canada at Sypson and Sears. I had went to visit my family in British Columbia. But I couldn't find the rest of the set. I finally found the rest. My son-in-law installed the four shelves. They look nice and work great.
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Reviewed in the United States on March 19, 2026
P
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piper
Fort Morgan, US
★★★★★ 4
They're ok.
Size: 36"W, 2P, Color: White
The shelves are good but the wall brackets need more varied hole spacing, and the holes on the shelves for the bracket arms are loose so even screwed in they move a little bit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2026

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