Holley EFI Terminator X Stealth 4150 2×4 – Shiny

Holley EFI Terminator X Stealth 4150 2×4 – Shiny

The Holley EFI Terminator X Stealth 4150 2×4 – Shiny is a bolt-on EFI system designed to replace 4150 flange carburetors on American V8 engines. It supports up to 1500 HP naturally aspirated and 1250 HP forced induction, delivering improved idle stability, drivability, and wide-open throttle power through self-tuning fuel and ignition control.

Key Features

• Includes eight 100 lb/hr fuel injectors for high-flow fueling
• Genuine Bosch LSU 4.9 wideband O2 sensor for real-time fuel map learning
• Self-tuning ECU with integrated ignition timing control and simple calibration wizard
• High-resolution full color touchscreen for setup, tuning, and gauge display
• Supports sequential and batch fire fuel injection with boost, knock retard, and nitrous control
• Plug and play compatibility with Holley EFI accessories and CAN-BUS support
• Polished aluminum throttle body with 1.75 in. bore and 4150 squarebore flange

Fitment

• Direct bolt-on replacement for 4150 flange carburetors
• Designed for American V8 engines up to 1500 HP NA or 1250 HP forced induction

Note: Requires an external fuel pressure regulator set to 58.5 PSI (Holley P/N 12-886). Verify compatibility before ordering. No fuel pump or fuel hose included. Basic tuning knowledge recommended for optimal results.