SKU: 51940756278

Holley Sniper EFI Self-Tuning Kit + Handheld EFI Monitor- Polished # HO550-510

Sale price$877.50 Regular price$975.00
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

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Description

Holley Sniper EFI Self-Tuning Kit + Handheld EFI Monitor- Polished # HO550-510Holley just brought EFI within range with Sniper EFI! Introducing Sniper EFI! Sniper EFI is economically priced so you can have all the benefits of Fuel Injection and still have money to finish or upgrade the rest of your ride! Perfect for street rods, muscle cars, off road trucks, or nearly any carbureted vehicle. A Sniper EFI system can put an end to cold start issues, hesitations, vapor lock, and flooding. We also offer a full line of Sniper

Holley just brought EFI within range with Sniper EFI! Introducing Sniper EFI! Sniper EFI is economically priced so you can have all the benefits of Fuel Injection and still have money to finish or upgrade the rest of your ride! Perfect for street rods, muscle cars, off-road trucks, or nearly any carbureted vehicle. A Sniper EFI system can put an end to cold start issues, hesitations, vapor lock, and flooding. We also offer a full line of Sniper Hyperspark distributors, Sniper ignition boxes, Sniper coils, and other ignition components for those looking to round out their ride with a complete Sniper EFI, Ignition, and Fuel system! Upgrade to Sniper EFI and get the tactical accuracy of EFI today!
Features:
Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange Spread Bore manifolds - (Spread Bore Sealing Plate Part #9006 is recommended)
Throttle body mounted ECU no extra boxes to mount
Supports up to 650hp with Four 100 Lb/Hr Injectors!
Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition RPM)
Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI)
Integrated ignition timing control coil driver
High Resolution Full Color Touchscreen 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 master kits (Master kits include complete fuel system consisting of; 20ft of 3/8" 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 realtime Fuel Map Learn!
OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service.

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: 51940756278

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4.7 ★★★★★
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Verified Purchase
Randy B.
Massapequa, US
★★★★★ 5
OEM Quality.
Exact fit.
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Reviewed in the United States on April 7, 2026
R
Verified Purchase
Rick Ivy
Whiting, US
★★★★★ 5
Quality
Quick shipping and good quality materials.
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Reviewed in the United States on December 1, 2025
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Verified Purchase
Donna M. Kovalick
Lake Worth, US
★★★★★ 5
Perfect fit!
Perfect fit!!
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Reviewed in the United States on October 5, 2025
T
Tim
Bozeman, US
★★★★★ 5
Good quality fits 2025 Civic Hybrid
The filters are good quality. I did not find any instructions, but then again, the tube is full of them. Compaitble with 2025 Civic Hybrid. The engine filter have a bit of a chemical smell, but the air cabin filter does not. The cabin filter has an interesting yellow color.
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Reviewed in the United States on February 13, 2026
S
slwf
Bozeman, US
★★★★★ 4
Quality filters for a decent price
The engine filter is model # JMAJ20. I am not sure of the cabin filter model #. I have a 2026 Honda CRV Hybrid 2.0L Sport Touring. These should fit as almost everything matches between the 2025 and 2026. I have not yet needed to swap the filters in the new vehicle. These filters will be stored for future replacement. The filters appear to be well made. This is a decent price fortwo filters. The engine filter's gasket is a little wavy but it should be ok to form fit once inserted into the car. The engine filter is in a retail box without a plastic wrapper but the cabin filter is just a plain cardboard box inside a plastic wrapper. This might be challenging to remember what is in the box later once the filter needs to be replaced unless I write the information onto the box. I am unsure if the lack of a wrapper for the engine filter will affect the filter while stored. I did not notice a smell to these but I am not sensitive to smell. I would get these again.
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Reviewed in the United States on October 14, 2025

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