8 Injectors - 800-1500 HP

Part Number: 550-1070

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 and Benefits

• 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)
• 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 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)