Holley EFI Terminator X Stealth GM LS 4150 – Shiny

Holley EFI Terminator X Stealth GM LS 4150 – Shiny

The Holley EFI Terminator X Stealth GM LS 4150 – Shiny is a high-performance EFI system designed for GM LS engines with 4150 squarebore throttle bodies. Supporting up to 650 HP naturally aspirated or 600 HP forced induction, this self-tuning system offers integrated ignition control and a sleek stealth installation perfect for serious domestic V8 builds.

Key Features

• Includes four 100 lb/hr fuel injectors supporting up to 650 HP
• Integrated ignition timing control with plug-and-play GM LS coil harness compatibility
• Self-tuning ECU with full-color touchscreen and simple calibration wizard—no laptop needed
• Built-in 1 bar MAP sensor and support for boost, nitrous, and datalogging
• Transmission kickdown provisions for GM TH350/400, 200R4/700R4, and Ford C4/C6 (Max kits offer plug-and-play control for GM 4L60/4L80)
• Fuel pressure regulator required (set at 58.5 PSI), not included
• OEM style TPS and IAC sensors included for reliable operation
• Stealth wiring exits below injector bowls for clean installation

Fitment

• GM LS engines with 4150 squarebore throttle body flange
• Supports both naturally aspirated and forced induction setups up to 650 HP

Note: External fuel pressure regulator and fuel system components are required but not included. Verify compatibility with your transmission and engine before ordering. Professional installation and tuning recommended for optimal performance.