Holley Sniper 550-511 EFI 4150 4-Barrel Self-Tuning Base Kit

#425550511

Holley Sniper 550-511 EFI 4150 4-Barrel Self-Tuning Base Kit

Name: Holley Sniper 550-511 EFI 4150 4-Barrel Self-Tuning Base Kit
Brand: Holley Sniper
SKU: 425550511
Price: 1228.95 USD
Availability: InStock
Rating: 5 (3 reviews)

Holley Sniper

3 Reviews

9 Questions

Features a throttle body mounted ECU
It is capable of supporting up to 650 HP
Fits single and dual plane intake manifolds

$1,228.95

each

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Product Summary

Universal Fit, Throttle Body Injection Style, Black

Features a throttle body mounted ECU
It is capable of supporting up to 650 HP
Fits single and dual plane intake manifolds
Designed to be a direct carburetor replacement
Has a built in pre-set fuel pressure regulator

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Key Specs

MFG. Part #	550-511
Brand	Holley Sniper
CFM	800 CFM

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Details

Put an end to mysterious air/fuel ratios, jet changes, and cold-start rough idle troubles with Holley Sniper EFI. Affordable aftermarket fuel injection is here and it couldn't be any easier to install on your vehicle. Holley Sniper EFI is a perfect match for any muscle car, classic truck, street rod, or nearly any other carbureted vehicle. Economically priced to save your hard earned money for other parts of your build; Holley Sniper EFI is a self-tuning, plug and play fuel injection system that takes all the trouble and guesswork out of your switch to modern electronic fuel injection. With over 100 years of building quality fuel systems, you can trust Holley Sniper with all your electronic fuel injection needs!

Holley Sniper EFI is packed with all the features that your car or truck needs. This throttle body fuel injection replaces any square bore or spread bore style 4-barrel carburetor. The built in ECU keeps the wiring neat and tidy with no need to run the computer and associated wiring back into the cab of the vehicle. Connect the 4 necessary wires and you're good to go. The self-learning ECU takes care of setting the baseline tune while the full touchscreen display allows you to fine tune as you please. Sniper EFI throttle bodies utilize OEM style TPS and IAC modules for dependable and serviceable use. Life is too short to hassle with cold start issues, hesitations, flooding, and carburetor inconsistencies. Leave that old 4-barrel to rest and bring in a new era of performance, reliability, and fun with a Holley Sniper EFI system!

Direct carburetor replacement
Fits single and dual plane intake manifolds
Naturally aspirated applications only
Throttle body mounted ECU - no extra computers to mount or relocate
Capable of supporting up to 650 HP
Simple, 4 wire connection (Battery +, Battery -, Switched ignition & RPM)
Built in pre-set fuel pressure regulator
Integrated ignition timing control & coil driver
Color touchscreen for easy setup and gauge displays
Self tuning ECU means you dont have to be a computer/tuning expert to enjoy EFI
Black finish
Sold individually

Charts

Quickstart Guide (PDF)

Instruction Manual (PDF)

Wiring Instructions (PDF)

Guides & Documents

Fuel Injection Systems Instruction Sheet (425550511)

Choosing an Electronic Fuel Injection Retrofit for Your Street Rod or Muscle Car

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or 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

Specifications

KEY SPECS
MFG. Part #	550-511
Brand	Holley Sniper
CFM	800 CFM

GENERAL
Carburetor Flange Type	4-Barrel Square Bore
Injection Style	Throttle Body
Injector Size	100 lbs./hr.
Max Horsepower Rating	650
ECM Included	Yes
User Tunable	Yes
Self Tuning	Yes
Injectors Included	Yes
Intake Manifold Included	No
Metering Style	Speed density
EGR	No
Throttle Body Included	Yes
Throttle Body Material	Cast Aluminum
Throttle Body Finish	Black
Venturi Quantity	4
Fuel Pump Included	No
Fuel Rails Included	No
Calibration Module Included	Yes
Wiring Harness Included	Yes
Fuel Pressure Regulator Included	Yes
Distributor Included	No
MAP Sensor Included	Yes
IAC Motor Included	Yes
IAT Sensor Included	Yes
TPS Sensor Included	Yes
Finish	Black
Use with Power Adder	No
Color	Black
Throttle Body Barrels	4-Barrel
GTIN Code	090127739877
Sold in Quantity	Kit