Holley Sniper 550-872 Stealth 4150 EFI, Gold

Description

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 Super 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 8 injector variation is capable of supporting up to 1250 HP on forced induction applications
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Sku # 425550872
Mfr. Part # 550-872
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 Super 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 8 injector variation is capable of supporting up to 1250 HP on forced induction applications. The Sniper Stealth 4150 ECU is capable of complete ignition timing control, fuel self-learning, 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?Master Kits include complete fuel system with an external fuel pressure regulator preset to 58.5psi, 20ft of 3/8" Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!
Bolt on 4150 flange carburetor replacement fit's a wide range of factory intake manifolds
Throttle body mounted ECU - no extra boxes to mount
Supports up to 650HP with four 100lb/hr injectors or 1250HP with eight 100lb/hr injectors
Includes high pressure fuel crossover line allowing you to quickly plumb your fuel system
All of the wiring exits below the rear fuel injector cover, for a completely stealth installation.
Timed spark part 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)
Requires use of external fuel pressure regulator, Holley PN# 12-886 or equivalent, set to a base pressure of 58.5 PSI
Integrated ignition timing control improves idle stability, drive-ability, and wide open throttle response
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
Also available in Black, PN# 550-871 and Shiny, PN# 550-870 finishes
Charts
(PDF)
(PDF)
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
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
User Tunable
Yes
Injector Size
100 lbs./hr.
Throttle Body Finish
Gold
Use with Power Adder
Yes
Max Horsepower Rating
650
MFG. Part #
550-872
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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.
Return Policy
We want you to be satisfied with your purchase. If within 60 days after you receive your shipment and you are not satisfied, you may return the item for a refund. Refunds will be processed (1-2) days after the item is received by Speedway. All returned merchandise must be in original factory condition with no modifications or alterations. A restocking fee up to 15% may be applied if items are not in new condition.
Returned merchandise must include all packaging materials, warranty cards, manuals, and accessories. If the items being returned need to be repackaged, there will be a repacking charge. Repack the item in a sturdy box, include a copy of your invoice and complete the form on the back of the invoice. You must ship orders back PREPAID. WE DO NOT ACCEPT COD SHIPMENTS.
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Guarantee
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Due to our large inventory and the diversity of our product line, the stock photo used may not be an exact representation of the item you are bidding on. Please read all product information carefully before purchase to avoid any order issues.