Holley 550-1081 EFI Terminator X Stealth 2x4 4500 Kit - Black

8 Injectors - 800-1500 HP

Part Number: 550-1081

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 and Benefits

• 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)

Not for use with engines producing less than 800 horsepower_x000D_ Gasoline Only_x000D_ Use of leaded race fuels may shorten the service life of the WBO2 sensor