$163 Off

Holley Sniper 2 550-510-3PD Returnless EFI Kit, Polished

$163 Off

#4255505103PD

Holley Sniper 2 550-510-3PD Returnless EFI Kit, Polished

Returnless Style Drop-In Module - With PDM - 3.5 in. Handheld
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

Finish:

Polished

Fuel System:

Universal Returnless Drop In Module

Not Included MasterUniversal Drop In Module

Hyperspark Ignition Kit:

Power Distribution Module:

User Interface:

3.5 In. Handheld

$2,199.95

/each

In Stock

$2,362.95

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Product Summary

Universal Fit, Throttle Body Injection Style

Returnless Style Drop-In Module - With PDM - 3.5 in. Handheld
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

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Key Specs

Injection Style	Throttle Body
Injector Size	100 lb/hr
Max Horsepower Rating	650
ECM Included	Yes
Throttle Body Style	Throttle Body Injection (TBI)

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Holley Sniper 550-510-3PD Details

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. 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. 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. 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.

Features:

(NEW) Next generation ECU features improved RF noise and interference resistance (stands up to old car wiring, noisy alternators, faulty plug wires)
The included genuine Bosch LSU 4.9 wideband oxygen Sensor provides real-time fuel map learning
Supports up to 650hp naturally aspirated or 575hp on boost with four 100 lb/hr injectors
(NEW) “Hidden Harness” wiring harnesses exits from the rear of throttle body for a clean appearance
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
All new design – the #1 EFI Conversion just got better!
(NEW) Sniper 2 throttle bodies are serialized in house, which provides each unit a birth certificate for an improved customer service and warranty experience in the event of any unit needing to be inspected
Main Features
Patent Pending
(NEW) Inputs and outputs consist of: 2x Ground Inputs, 2x Ground Outputs, 1x TPS output (0-5v), and 1x Tach Output
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) Cast-in fuel crossover from the primary to secondary fuel rail
(NEW) Optional Power Distribution Module (PDM) further simplifies wiring, especially when used in conjunction with an ignition system
(NEW) Main harness includes plug-and-play HyperSpark distributor support, for integrated timing control, making your ignition setup hassle free
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
(NEW) Redesigned throttle shaft and plate geometry for a smoother throttle feel
(NEW) Redesigned injector connector for improved reliability
(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
Additional Features
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
Only four wiring connections required: Battery+, Battery-, Switched Ignition, and RPM
(NEW) Integrated transmission kick down provisions for GM TH350/400, 200-4R/700R4 and Ford C4/C6 applications
Sniper 2 is Part of the Sniper EFI Complete Ecosystem
(NEW) Wide Variety of tuning and gauge display interfaces: 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) Next Generation mil-spec style M8 positive lock connector for CAN1 and CAN2 provides the latest in CAN bus technology for a simple yet robust connection
(NEW) Onboard contactless magnetic TPS sensor ensures an accurate TPS reading

Guides & Documents

Fuel Injection Systems Installation Instructions (4255505103PD)

Fuel Injection Systems Warranty (4255505103PD)

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA Prop 65

CARB warning

Holley Sniper 550-510-3PD Specifications

KEY SPECS
MFG. Part #	550-510-3PD
Brand	Holley Sniper
Injection Style	Throttle Body
Injector Size	100 lb/hr
Max Horsepower Rating	650
ECM Included	Yes
Throttle Body Style	Throttle Body Injection (TBI)

GENERAL
CFM	800 CFM
User Tunable	Yes
Self Tuning	Yes
Injectors Included	Yes
Intake Manifold Included	No
Throttle Body Included	Yes
Distributor Included	No
Color	Polished
GTIN Code	090127864647
Sold in Quantity	Each
Timing Control Compatible	Yes
Filter Included	No

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