$235 Off

Holley 550-1070 Terminator X Stealth 4500 EFI System 8 Inj, Shiny

$235 Off

#4255501070

Holley 550-1070 Terminator X Stealth 4500 EFI System 8 Inj, Shiny

Bolt on 4500 Flange Carburetor Replacement
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 for large cubic inch engines

$3,049.95

Factory Shipped

$3,284.95

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Product Summary

Universal Fit, Throttle Body Injection Style, Polished

Bolt on 4500 Flange Carburetor Replacement
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 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

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Key Specs

Injection Style	Throttle Body
Injector Size	100 lb/hr @ 58.5 PSI
Max Horsepower Rating	1500
ECM Included	Yes
Throttle Body Style	Throttle Body Injection (TBI)

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Holley 550-1070 Details

The Terminator X Stealth 4500 EFI system 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
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 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
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!
OEM Style TPS/IAC, for years of dependable service.
Included weld-in O2 sensor bung for the exhaust ensures a leak free oxygen sensor installation
Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th – ¼ and 3/16ths) - or for Boosted applications, you can disable the internal MAP sensor, and utilize an external MAP Sensor, the harness comes with the connector terminated, making the install
Plug and play with Holley EFI Accessories, such as the 12.3” and 6.86” Pro Dash; CAN EGT; and Digital Analog style EFI gauges
Available in 2 finishes, Shiny and Black

Guides & Documents

Choosing an Electronic Fuel Injection Retrofit for Your Street Rod or Muscle Car

Fuel Injection Systems Installation Instructions (4255501070)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CARB warning

Holley 550-1070 Specifications

KEY SPECS
MFG. Part #	550-1070
Brand	Holley
Injection Style	Throttle Body
Injector Size	100 lb/hr @ 58.5 PSI
Max Horsepower Rating	1500
ECM Included	Yes
Throttle Body Style	Throttle Body Injection (TBI)

GENERAL
Carburetor Flange Type	4-Barrel Square Bore
CFM	1440 CFM
User Tunable	Yes
Self Tuning	Yes
Injectors Included	Yes
Intake Manifold Included	No
Metering Style	Speed density
EGR	No
Throttle Body Included	Yes
Throttle Body Material	Aluminum
Throttle Body Finish	Polished
Throttle Body Flange Type	4-Barrel Square Bore
Fuel Pump Included	No
Calibration Module Included	Yes
Wiring Harness Included	Yes
Fuel Pressure Regulator Included	No
Distributor Included	No
MAP Sensor Included	Yes
IAC Motor Included	Yes
IAT Sensor Included	Yes
TPS Sensor Included	Yes
Use with Power Adder	Yes
Throttle Body Barrels	4-Barrel
GTIN Code	090127105245
Sold in Quantity	Kit

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