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-8% Holley Terminator X 2x4 Throttle Body  Injection System

We have for many years been the only ones to offer the original Terminator EFI system in a Twin Throttle Body / 2x4 setup.  And now that the Terminator X Stealth is here, we are the first to offer a Terminator X 2x4 Throttle Body Injection System in a turn-key kit.  You can take your pick of any of the three different colors and get a complete turn-key 2x4-barrel throttle body EFI system, with or without electronic transmission control capability for the GM 4L60E-4L80E or the Ford 4R70W-4R75W transmissions. 

These systems offer all of the features of the standard Terminator X EFI System but with twin four-barrel throttle bodies.  We perform all of the setup so that the system will be ready for initial start-up when professionally installed.  And, as with all of our products, the customer will receive our famed technical support from before the sale, through the installation, and assistance for the indefinite future.

Note:  Professional dyno tuning is recommended for all Terminator X 2x4 systems.  Kit includes Holley USB Harness.  Software can be downloaded here.

This kit includes:

  • Terminator X or Terminator X Max ECU (based on your selection of transmission control)
  • Two Terminator X Stealth throttle bodies with injectors
  • Two Stealth Terminator X Fuel Line Assemblies (one per Stealth throttle body)
  • Terminator Main Harness (professionally reconfigured for use with 2x4 Injector Harness)
  • Terminator 2x4 Injector Harness
  • Power Harness
  • 3.5-inch Handheld Touchscreen Monitor
  • USB Harness
  • Holley Bosch O2 Sensor and Coolant Temperature Sensor
  • Complete hardware kit included in standard Terminator X EFI System kit plus second base and air filter gaskets

The Terminator X 2x4 Throttle Body Injection System is built to order and, as such, special order terms apply. Please reference our Terms & Conditions for Special Orders.

What If I Already Have A Terminator EFI System?

If you've already got a Terminator EFI system and simply need a complete kit of the additional components necessary to add and reconfigure this as a twin throttle body setup then contact us and we can provide that.

What About A Fuel System?

Be sure to let us custom engineer a fuel system solution that will be perfect for your project's specific requirements.

Boost ControlYes
DIS OutputsAvailable
FamilyTerminator X
Fueling StrategySpeed Density, Alpha-N, or Combination
Includes Power HarnessYes
Injector DriversEight
Internal DataloggingVia Handheld / SD Card Only
Nitrous ControlYes
Number of Cylinders4, 6, or 8 (Even Fire Only)
User Configurable I/OYes
User-Selectable MAP StorageNo
Water-Methanol ControlYes
Displays And Controllers
Auto BrightnessNo
CAN Bus CapableYes (Specific to Holley ECUs Only)
Case/Bezel FinishBlack
ConfigurableMonitor dozens of pre-configured metrics provided by the ECU, including sensors, air/fuel ratio, switched outputs, drive-by-wire data, and more.
Data Loggingvia Handheld Controller Only
Display TypeLCD
FunctionsMonitor, Tuning
Gauge/Display Size3.5 Inch Rectangular
Internal StorageYes (SD Card)
Throttle Bodies
Barrels (BBL)2 x 4
Gaskets IncludedYes
IAC Motor IncludedYes
Injectors IncludedYes
StyleThrottle Body Injection
Throttle Bore Diameter (ea)44.45mm
TPS Sensor IncludedYes
Fuel Injectors
Flow Rate (Lbs / Hr)100 PPH at 60 PSI
Harness TypePower Harness, Main Harness, TBI Injector Sub-Harness, I/O Harness, Ignition Adapter, 2x4 Throttle Body Injector Harness
Crank Timing
Sensor Harness IncludedNo (Ignition Adapter Only)
TypeInternal 1-Bar MAP, Throttle Position (Integrated in TB); Coolant Temperature, Wideband O2 and Air Temperature Sensor; Fuel Pressure Sensor optional, not included
Also Included40-Amp Relay.
ApplicationUniversal (Requires intake manifold for two square bore throttle bodies)
ColorYour choice of Silver or Classic Gold
Unit of SaleKit

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Holley Terminator X 2x4 Throttle Body Injection System

  • Views: 14255
  • Brand: Holley EFI
  • Product Code: 550-1074 | 550-1076
  • Availability: In Stock
  • $3,126.00
  • $2,883.95

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