Holley Sniper 550-870 Stealth 4150 EFI, Shiny

Description

Designed to be a fully bolt-on 4150 Flange Carburetor Replacement, All of the wiring exits below the rear fuel injector cover, for a completely stealth installation, The air entry is machined to fit most stock-style air cleaners with air cleaner locator provisions, Features high resolution full color touchscreen for initial setup, tuning, and gauge displays, An included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn
Holley Sniper 550-870 Stealth 4150 EFI, Shiny
Sku # 425550870
Mfr. Part # 550-870
Condition
New
Brand
Holley Sniper
Sold
Kit
Details
Info
The Sniper Stealth 4150 EFI system from Holley features 4,100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Sniper Stealth 4150 ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications?
Features:
Bolt-on 4150 Flange Carburetor Replacement
Throttle body mounted ECU – no extra boxes to mount
Supports up to 650hp with Four 100 Lb/Hr Injectors!
Includes high-pressure fuel crossover line
All of the wiring exits below the rear fuel injector cover, for a completely stealth installation.
Timed spark port for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor.
Air entry is machined to fit most stock-style air cleaners with air cleaner locator provisions.
Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as.
Integrated ignition timing control
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!
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.
Included clamp-on oxygen sensor kit for 2.25" exhaust ensures a leak-free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
available in 3 finishes: Shiny (550-870), Black (550-871), and Gold (550-872)
Charts
(PDF)
(PDF)
(PDF)
Installation Tips
If using with power adders, use with nitrous but not for turbocharged applications.
This item is being shipped to you directly from the manufacturer and is subject to an increased handling time. Delivery estimates that include the handling time are displayed on the "Shipping and Payments" tab.
Specs
Finish
Polished
Sold in Quantity
Kit
Carburetor Flange Type
4-Barrel Square Bore
CFM
870 CFM
Injection Style
Throttle Body
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
No
MAP Sensor Included
Yes
IAT Sensor Included
Yes
Venturi Quantity
4
Self Tuning
Yes
Throttle Body Material
Cast Aluminum
Throttle Body Finish
Polished
User Tunable
Yes
Injector Size
100 lbs./hr.
Use with Power Adder
Yes
Max Horsepower Rating
650
MFG. Part #
550-870
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About
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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