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Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)

Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)
Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)
Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)
Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)
Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)
Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)
Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)
Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)

Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)

Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511). Product image may look slightly different from actual product appearance. Holley aluminum Ultra XP carburetors feature all-new construction for maximum performance, right out of the box. They start off with a 6061-T6 billet aluminum black, bright-dipped anodized base plate. They feature elongated mounting holes, allowing for fitment in intake manifolds with a square 4150 or large Dominator-style flange.

The base plates feature a dedicated, race-only throttle lever with all unnecessary street attachment points and tangs removed. A stainless steel adjustable secondary link offers you a choice of 1:1 or progressive secondary throttle actuation for ultimate control of the secondary opening rate. They also use knurled (hand-adjustable) primary and secondary curb idle screws, a capped primary throttle shaft, factory-machined mounting holes, and a throttle body and new secondary pump cam lever designed to provide positive throttle stop on the secondary side. On top of that, Holley uses an updated main body design with air bleeds moved outward to allow for a smoother transition of airflow from the top of the carburetors into the venturi. The integrated bypass valve eliminates the need for holes in the throttle plates, helping to maintain the correct plate to transfer slot relationship, as well as good idle control when using radical camshaft profiles.

Also installed is a new contoured hex head squirter for streamlined airflow, and all unnecessary mounting bosses have been removed for a smoother, cleaner appearance. Next, they add 6061-T6 billet aluminum metering blocks with improved durability, true gasket sealing, and bright-dipped anodizing for corrosion protection. The blocks are fully adjustable (emulsion bleeds, power valve channel restrictors, and idle feed restrictors). Excess material has been removed for improved fuel capacity, an integrated pry point assists in disassembly from the fuel bowl and main body to prevent damage to the gaskets, and a new snap-in-place bowl vent whistle makes removal and/or replacement easier.

Finally, they finish everything off with a totally new fuel bowl design. They have 20 percent more fuel capacity than traditional V-bowls, eliminating fuel starvation, while providing more consistent air/fuel ratios.

The bowls have internal baffling to help control fuel slosh and minimize float level fluctuations in hard-lunching or cornering situations, and a fuel shelf built-in below the needle and seat to greatly minimize fuel aeration and promote better metering. Their unique fuel trough is designed into the floor bowl to route fuel flow directly to the jets and assist in keeping the jets covered by fuel. The specially made clear Pyrex sight windows are located on both sides of the fuel bowl, making fuel level adjustments both safe and easy. The new bowl also uses a better positioned built-in drain plug to drain the fuel out of the bowl, and the contoured entry point provides XP smooth fuel flow directly to the needle and seat.

These pieces combined make the Holley aluminum Ultra carburetors the perfect choice for your race-only application. Our Best Price Guarantee is part of our commitment to always offer you the lowest possible price. Should you find a lower advertised price for the identically stocked product elsewhere, we will happily match the price. How do I request a Price Match? You can do that via the eBays make offer option.

Simply present proof of the competitors advertised price in the message section. Once your price match request is verified and the competitors product is confirmed as being in stock and available for immediate sale we will happily accept your offer.

Enter your offer in the input box provided. You have the option adjust the order quantity.

Offers which include cash back or bonus stock. Offers that are only available to trade, special event, club or membership offers. Clearance, seconds, refurbished, ex-demonstration or display products. Products supplied through unauthorised distributors or delivered directly to customers from an overseas distributor. Products with pricing set significantly lower than the recommended retail price or market value.

Do you accept offer for bulk deal? What proof do I need when requesting a Best Price Guarantee? Please provide a link to the lower priced product.

Can I Cancel a Best Offer? In some cases, you can retract or cancel a Best Offer, for example if you accidentally entered the wrong offer amount.

You'll need to fill out a Best Offer cancellation form. Can I make more than one offer? If we reject your offer, you can make another one (up to 3 on most items). Bank Transfer Below is our bank transfer details. Only unused products are eligible for return.

Items must be completely repackaged in the original packaging. The customer is responsible for all charges involved in returning the items. Damaged items must be completely repackaged in the original packing and we will arrange for the return and replacement. How to make an offer. The item "Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)" is in sale since Monday, October 2, 2017.

This item is in the category "Vehicle Parts & Accessories\Car & Truck Parts\Performance Parts\Other". The seller is "rolan-australia" and is located in Seven Hills, NSW. This item can be shipped worldwide.
  • Brand: Holley
  • Manufacturer Part Number: HLY-550-511#1
  • Model: Fuel Injection Systems
  • Warranty: 3 months
  • Airflow Rate (cfm): 800 cfm
  • Calibration Module Included: Yes
  • Distributor Included: No
  • ECM Included: Yes
  • EGR: No
  • Fuel Pressure Regulator Included: Yes
  • Fuel Pump Included: No
  • Fuel Rails Included: No
  • IAC Motor Included: Yes
  • IAT Sensor Included: Yes
  • Injection Style: Throttle body
  • Injector Size (lbs/hr): 100 lbs.

  • Injectors Included: Yes
  • Intake Manifold Included: No
  • MAP Sensor Included: Yes
  • Metering Style: Speed density
  • Notes: Kit includes 4 injectors and can support up to 650 hp.
  • Oxygen Sensor Included: Yes
  • Power Adder Compatible: No


Holley Sniper EFI Self-Tuning Kit Black With Handheld EFI Monitor (550-511)