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

Description

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
Holley Sniper 550-511 EFI 4150 4-Barrel Self-Tuning Base Kit
Sku # 425550511
Mfr. Part # 550-511
Condition
New
Brand
Holley Sniper
Sold
Each
Details
Info
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
(PDF)
(PDF)
(PDF)
Specs
Sold in Quantity
Kit
Color
Black
CFM
800 CFM
Carburetor Flange Type
4-Barrel Square Bore
Injection Style
Throttle Body
Finish
Black
Metering Style
Speed density
Intake Manifold Included
No
Throttle Body Included
Yes
Distributor Included
No
Wiring Harness Included
Yes
EGR
No
Fuel Pump Included
No
Injectors Included
Yes
Fuel Rails Included
No
Calibration Module Included
Yes
TPS Sensor Included
Yes
IAC Motor Included
Yes
ECM Included
Yes
Fuel Pressure Regulator Included
Yes
MAP Sensor Included
Yes
IAT Sensor Included
Yes
Venturi Quantity
4
MFG. Part #
550-511
Self Tuning
Yes
GTIN Code
090127739877
Throttle Body Barrels
4-Barrel
Throttle Body Material
Cast Aluminum
User Tunable
Yes
Injector Size
100 lbs./hr.
Throttle Body Finish
Black
Use with Power Adder
No
Max Horsepower Rating
650
Reviews
great product great company
Rated
by original68 on September 16, 2018
Summary:
I will be installing this on my 1968 mustang 302 fastback. Engine is original block rebuilt with hydraulic roller.
Yes, I recommend this product.
It's a holley!
Rated
by Mark on May 03, 2018
Summary:
It's a holley!
Yes, I recommend this product.
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Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 69 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
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