4 Barrel Fuel Injection Conversion - Self-Tuning Kit + Handheld EFI Monitor - Gold Finish

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 fit’s a wide range of factory intake manifolds
Throttle body mounted ECU (Electronic Control Unit) – 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
Three programmable 0-5V sensor inputs for oil/fuel/dome or nitrous pressure sensors
Six programmable ground outputs for controlling external fans, nitrous or boost control solenoids
One +5v reference output - +5V power supply for 0-5v sensors
One sensor ground – ground supply for 0-5v sensors
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

Brand	Holley Sniper EFI
CFM	870
Emission Code	3
Finish	Classic Gold
Flange Style	4150
Fuel Pressure	58.5 PSI
Height	3.28"
Injector Size	100 lb/hr @ 58.5 PSI
Inlet / Outlet Size	3/4-16 Female O-Ring (AN 8)
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
Part Number	550-875

Holley Super Sniper EFI Stealth 4150 - 650 HP

Holley Super Sniper Stealth 4150 - 650HP - Gold Finish - Part # 550-875

Out Of Stock!

Holley Super Sniper Stealth 4150 - 650HP - Black Finish - Part # 550-874

Out Of Stock!

Holley Super Sniper Stealth 4150 - 650HP - Shiny Finish - Part# 550-873

Out Of Stock!

Sign Up for our Newsletter