Page loaded at: April 1, 2025, 7:08 am server time
Holley Terminator X Engine Control Unit MPFI LS2/LS3 & Late Truck
Product image(s) are for illustration purposes only.
Actual product may vary.

HO550-905 - Holley Terminator X Engine Control Unit MPFI LS2/LS3 & Late Truck

SKU: HO550-905

Part Type: Engine Management Systems

Brand: Holley EFI

Holley EFI

Availability: 1 to 3 Days - From Warehouse

Price: $2,935.80



Ships within 3 online business day(s) of cleared payment.
Orders after 2pm (South Australian Time) are processed the next online business day.

Estimate Shipping

GM LS Engines with 58x Crank, 4x Cam - 4.8/5.3/6.0 Truck Engines and LS2/LS3 - EV6 Injector Harness, 3.5" Touchscreen Included

 

Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley EFI at a budget-friendly price!

Terminator X features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Terminator X comes fully loaded with base maps for common LS engine combinations to get you out of the garage and on the road/track fast. The 3.5" touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building a budget beater or a boosted race car, Terminator X has the features and technology you need at a price that won't break the bank!

 

Features:

Designed for GM LS Engines with 58x Crank, 4x Cam - and EV6 Injectors.

Real-Time fuel map learn, takes the guess work out of tuning your base fuel table.

High Impedance Injector Drivers will safely power most Stock LS injectors, and Holley EFI Injectors. Injector support chart provided in the instructions (Will not control Low Impedance Injectors)

All of the new Terminator X systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.

MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths)

4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake

4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More

Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties

Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR

On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal –Cam Signal. Allow you to identify any Critical engine issues at a glance

Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table, can be used for any custom tables you can dream up, such as Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety! Adjustable through included 3.5” f

The included 3.5" Touchscreen Handheld contains a calibration wizard that allows you to quickly build a base tune for any LS engine. Additionally the handheld provides internal data-logging and a fully customizable gauge display.

The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDS must face up!

Plug and play compatible with more Holley EFI accessories such as; analogue style gauges, shift lights, various modules, and coming soon, 12.3" digital dash support!

Free EFI Tuning Software for complete control of your Terminator X power plant

Includes: 58x/4x LS Engine Main Harness - EV6 Injector Harness - Terminator X ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - Input/output Harness - and assorted vacuum adapters.

Categories EFI Systems & Components
Weight 4.2900
Manufacturer Part Number 550-905
Brand Holley EFI
Part Type Engine Management Systems
Interchange Part Number 550-905
Engine Type LS Series
Cylinder Head Type Standard
Engine Chevy LS Series
Similar Products

Holley Terminator X Engine Control Unit T-Screen Crank fits GM LS1/6

SKU: HO550-903

$2,650.40


Holley Terminator X Max Engine Control Unit MPFI LS2/3 Truck EV6 Inj

SKU: HO550-928

$4,210.85


Holley Terminator X Max Engine Control Unit MPFI W/Dbw Control

SKU: HO550-931

$3,850.85


Holley Terminator X Engine Mgmt System MPFI fits Ford V8

SKU: HO550-937

$2,935.80