Terminator EFI 4bbl Throttle Body Fuel Injection System

Name: Terminator EFI 4bbl Throttle Body Fuel Injection System
Brand: HOLLEY
SKU: 510-550-406
Price: 2795.95 USD
Availability: InStock

^$2,795⁹⁵

Ships on 11/06/2026

Lowest Price Guarantee

Terminator EFI 4bbl Throttle Body Fuel Injection Systems

Throttle Body Unit
Electronic Control Unit
Handheld Programmer
Wiring and All Sensors
Hard Core Gray Finish

An EFI System so easy and powerful you'll think it's alive! Simply bolt it on, feed it a few basic answers and let Terminator EFI take control of your ride!
Features:
Easy to install
No computer experience required - Handheld tuner included - Simple multiple choice set-up wizard
Self-tunes while you drive
Upgradable to complete laptop control without buying another ECU
Carburetor replacement EFI from the fuel systems experts
Installation Notes:
950 CFM
80 Lb/Hr @ 43 PSI Injector Size
1.750" Throttle Bores
3" Overall Height
Fits all standard square 4150-style flange intake manifolds
Connections for Ford, GM TH350 and 700R4, and other transmission linkages.
Does NOT include fuel pump, fuel lines, regulator or filters. Fuel System Kits sold separately.

There's a new self-tuning EFI on the streets and IT'S IN CONTROL!

The Holley Terminator EFI Systems have features not found in any other street EFI system including throttle body technology that is currently used in every NASCAR Sprint Cup Serie car. Installation is easy with no computer experience necessary, simply bolt it on, use the included handheld tuner to answer a few multiple choice questions and let the Terminator EFI take control, the system self-tunes as you drive. If you embrace modern technology and want to take control, the system is upgradable to complete laptop control without the need to purchase another electronic control unit. This carburetor replacement EFI system from the fuel system experts is perfect for street machines, off-road vehicles, trucks, RVs and weekend racers!

Terminator EFI Features:

Fully self-tuning ECU - No laptop required.
Self-tunes instantly to deliver the perfect air/fuel mixture in real time for optimized fuel economy and power.
Virtually maintenance free - keeps your vehicle reliable and ready to drive.
950 CFM Throttle Body with CFD computer designed air-entry area taken from Holley's famous NASCAR throttle body - as found on all NASCAR Sprint Cup Series cars.
Patent pending annular discharge fuel ring for maximum flow and optimum fuel atomization - No restrictions or delay in fuel flow like booster designs.
Serviceable sensors integrated into throttle body and pre-wired for a simple one-click connection.
Connections for Ford, GM TH350 and 700R4, and other transmission linkages.
Fits any square (Holley 4150) flanged intake.
80 lb/hr injectors support 250-600 HP engines.
Provides ignition timing control on engines with Small Cap HEI and Ford TFI distributors (requires adapter).
ECU fully potted and sealed for protection from vibration, dust and moisture.
Terminator ECU can be EASILY updated to Holley "HP" ECU specs with a free online software download. ECU can then be used for LSX, boosted, nitrous,and many other applications in the future as you desire!
Trouble-free performance with today's fuels - put an end to vapor lock and fuel varnish problems!