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Holley EFI Terminator X Stealth 2x4 4500 Kit - Black

Part # 550-1081 Be the first to write a review

8 Injectors - 800-1500 HP

Finish

Ignition Type

Inlet / Outlet Size

Max Horsepower Rating

Transmission

Holley EFI Terminator X Stealth 2x4 4500 Kit - Black

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$3,649.95
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3

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

See Emissions Details
The Terminator X Stealth 4500 2x4 EFI systems from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 1500 HP naturally aspirated or 1250 HP on forced induction applications. The Terminator X ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower! Designed to fit with Gen 3 Ultra Dominator air cleaners and fuel crossovers, allowing you to easily convert your 4500 equipped 800+ horsepower dragster or door car!

Features:

  • Bolt on 4500 Flange Carburetor Replacement for 2x4 intake manifolds
  • Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
  • 2.125” Throttle Plates, Flow 1440 CFM each for large cubic inch engines
  • Gen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange offering a variety of air cleaner options
  • External fuel pressure regulator required, such as 12-848
  • Throttle Linkage not included
  • Each throttle body contains 4x 100lb/hr fuel injectors
  • Universal engine harness allows you to easily install the Terminator X 2x4 4500 system on a wide variety of engine combinations
  • Timing Control support integrated within the ECU using supporting components (distributor, ignition box, or crank trigger)
  • 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!
  • Included weld-in O2 sensor bung for the exhaust ensures a leak free oxygen sensor installation
  • Plug and play compatible with multiple Holley EFI accessories including our gauges, shift lights, various modules, and digital and pro dashes (Holley P/N's 553-106, 553-111, and 553-112)

About Holley EFI

Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!

Accelerometer SupportYes
Boost ControlYes
Brand Holley EFI
CAN-BUS SupportYes
CategoryAir and Fuel Delivery
CFM2880
Coil Per Cylinder Ignition SupportYes
ColorBlack
Datalogging SupportYes
Distributor IncludedNo
Dry Nitrous ControlYes
e85 SupportNo
EGT SupportYes
Emission Code3
FinishBlack
Flange Size4500
Flange StyleDominator
Forced Induction HP@60PSI1250
Forced Induction SupportYes
Fuel Filter IncludedNo
Fuel Hose IncludedNo
Fuel Injectors IncludedYes
Fuel Pressure58.5 PSI
Fuel Pressure Regulator IncludedNo
Grade TypePerformance
Handheld IncludedYes
Height3.85"
Horsepower Rating (HP)1500
Idle Air Control Motor IncludedNo
Ignition Timing ControlYes
Ignition TypeUniversal
Individual Cylinder Fuel CorrectionsNo
Injector Size100 lb/hr @ 58.5 PSI
Inlet / Outlet Size8AN
Intake Manifold IncludedNo
Knock Retard SupportYes
MAP Sensor1bar
Max Horsepower Rating1500+
Mounting Hardware IncludedNo
Multi-Stage Nitrous ControlYes
Naturally Aspirated HP@60PSI1500
Part TypeFuel Injection System
PDMNo
Power Distribution ModuleNo
Product TypeEFI System
Progressive Nitrous ControlYes
Self-TuningYes
Sub CategoryFuel Injection System and Related Components
Terminator LS OptionsFuel, Spark
Throttle Bore2.125 in.
Throttle Position Sensor IncludedYes
Traction Control SupportYes
TransmissionN/A
User-TuneableYes
UPC090127130247
Part Number550-1081
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) 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


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
Not for use with engines producing less than 800 horsepower Gasoline Only Use of leaded race fuels may shorten the service life of the WBO2 sensor

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      Some parts are not legal for use in California or other states with similar regulations.