HOLLEY SNIPER STEALTH 4150 - SHINY FINISH
4 Barrel Fuel Injection Conversion - Self-Tuning Kit + Handheld EFI Monitor - Shiny Finish
PART# 550-870
 
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.
 
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!
 
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 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)
	
External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886.
	
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 real-time 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
	
vailable in 3 finishes: Shiny, Black and coming soon, Gold
 
Instructions for 550-870
 
Specs:
	
		
			
Brand
			
Holley Sniper EFI
		
		
			
CFM
			
870
		
		
			
Emission Code
			
3
		
		
			
Finish
			
Shiny
		
		
			
Flange Style
			
4150
		
		
			
Fuel Pressure
			
58.5 PSI
		
		
			
Height
			
3.28"
		
		
			
Injector Size
			
100 lb/hr @ 58.5 PSI
		
		
			
Inlet / Outlet Size
			
9/16-18 Female O-Ring (AN 6)
		
		
			
MAP Sensor
			
2Bar
		
		
			
Max Horsepower Rating
			
650 Naturally Aspirated
		
		
			
Model
			
4150 EFI Conversion Throttle Body
		
		
			
Product Type
			
EFI
		
		
			
Transmission
			
700R4/200R4
		
		
			
 
			
Ford C4/C6
		
		
			
 
			
TH350
		
	
 
 
Emissions:
3
 
This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.
 
The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:
	
1965 and older U.S. manufactured California Certified vehicles
	
1967 and older U.S. manufactured Federally Certified vehicles
	
1967 and older Foreign manufactured vehicle
 
The following vehicles are considered Racing Use Only Vehicles:
	
Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street
 
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
 
The following vehicles are considered Emissions Controlled Vehicles:
	
1966 and newer U.S. manufactured California Certified vehicles
	
1968 and newer U.S. manufactured Federally Certified vehicles
	
1968 and newer Foreign manufactured vehicle