Description
Advanced EFI System. The Holley EFI Terminator X Stealth 4150 Black is a high-performance electronic fuel injection system designed to replace carburetors in naturally aspirated or forced induction engines. It manages fuel injection and ignition timing to optimize engine performance, improve drivability, and enhance throttle response. This system supports up to 1250 horsepower on forced induction setups and includes features such as self-tuning and real-time fuel map learning.
Construction and Appearance. This EFI system is built around a durable 4150 flange design with an all-black finish made for stealthy installations. It integrates eight high-flow, 100 lb/hr fuel injectors and incorporates an internal 1-bar MAP sensor within the ECU for precise monitoring. The wiring exits discreetly below the rear fuel injector cover, maintaining a clean, OEM-style appearance. The air entry is machined for compatibility with most stock air cleaners, with provisions for air cleaner locators.
Installation. Installation is straightforward with a bolt-on design replacing the 4150 flange carburetor, requiring no drilling. The system includes a simple calibration wizard that eliminates the need for a laptop during setup, simplifying the tuning process.
Application. Fits Universal; Some Adaptation May Be Required.
Holley EFI 550-1005
CA Residents: WARNING: Cancer and Reproductive Harm
- Eight Injectors Supporting Up To One Thousand Two Hundred Fifty Horsepower Forced Induction
- Available Finish Options Include Black, Gold, And Shiny
- Ignition Types Offered Include Universal, GM LS 24X, And GM LS 58X
- Inlet And Outlet Sizes Available In Six AN And Eight AN
- Maximum Horsepower Ratings Include One Thousand Two Hundred Fifty For Forced Induction And Six Hundred Fifty For Naturally Aspirated
- Transmission Compatibility Includes Four L60E / Four L80E And Not Applicable
- Emissions Legal For Use On Uncontrolled Non-Emissions Controlled Vehicles
- Fuel Injectors Sized At One Hundred Pounds Per Hour At 58.5 PSI
- Built-In 1 Bar MAP Sensor In ECU
- Supports Both Boost Control And Dry Nitrous Control
- Includes Genuine Bosch LSU 4.9 Wideband Oxygen Sensor For Fuel Map Learning
- Compatible With OEM Style TPS/IAC
- Equipped With Simple Calibration Wizard That Requires No Laptop For Setup
- Provides Transmission Kick Down Provisions For GM TH350/400, 200R4/700R4, And Ford C4/C6
- Datalogging And CAN-BUS Support Enabled
- Includes Handheld Device
- Supports Coil Per Cylinder Ignition Control And Ignition Timing Control
- Flange Size Of 4150
- Fuel Pressure Set At 58.5 PSI
- Grade Type Is Performance
- Color Specified As Black
- Emission Code Three
- Accelerometer Support Enabled
- Multi-Stage Nitrous Control Capable
- E85 Fuel Support Not Available
- Distributor Not Included
- Self-Tuning Feature Available
- Fits Universal; Some Adaptation May Be Required
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