Holley EFI Terminator X Stealth 4500 - Black

Holley EFI Terminator X Stealth 4500 - Black

The Holley Terminator X Stealth 4500 EFI System combines the classic appearance of a Dominator-style carburetor with the advanced performance of modern electronic fuel injection. Designed as a direct replacement for 4500 flange carburetors, this self-learning EFI system features eight 100 lb/hr injectors, integrated ignition timing control, and a powerful Terminator X ECU capable of supporting up to 1500 HP naturally aspirated or 1250 HP in forced induction applications.

Perfect for drag racers, door cars, and high-horsepower street machines, the Stealth 4500 is designed to work with Gen 3 Ultra Dominator air cleaners and fuel crossovers, making it easy to upgrade your existing 4500-equipped combination to EFI without sacrificing appearance.

Key Features

• Direct bolt-on replacement for 4500 flange carburetors
• Supports up to 1500 HP naturally aspirated or 1250 HP forced induction
• Eight 100 lb/hr fuel injectors included
• Large 2.125" throttle plates with 1440 CFM airflow capability
• Self-learning Terminator X ECU automatically tunes fuel maps
• Integrated ignition timing control improves drivability and performance
• High-resolution full-color touchscreen for setup, tuning, and gauge display
• Simple calibration wizard requires no laptop
• OEM-style TPS and IAC motors for dependable operation
• Built-in 1-Bar MAP sensor with included vacuum adapters

Performance Benefits

• Improved idle stability and street manners
• Enhanced throttle response and wide-open throttle performance
• Automatic fuel map learning and adjustment
• No EFI tuning experience required
• Ideal for large cubic-inch and high-horsepower engine combinations

Additional Features

• Gen 3 Ultra Dominator-style 4-bolt air cleaner flange
• Supports external MAP sensors for boosted applications
• Includes weld-in oxygen sensor bung for leak-free O2 sensor installation
• Plug-and-play compatible with Holley gauges, shift lights, modules, and digital dashes
• Compatible with Holley Digital Dash and Pro Dash systems

Important: An external fuel pressure regulator is required, such as Holley P/N 12-848.

Note: For boosted applications, the internal MAP sensor can be disabled and replaced with an external MAP sensor for expanded boost monitoring capabilities.