Terminator X, MAX, Chevrolet, LS1, LS6, 4L60/4L80 Transmission, Drive By Wire, Engine EFI Management Systems, Each


$1,666.95 $1,499.95

Holley Terminator X, 24x crank trigger, DBW with Trans control

18 in stock (can be backordered)

Brand : Holley EFI
Part Number : 550-926
UPC : 90127060889
Country of origin : US
Year : 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Size : 4.8L/293 LS1, 5.3L/325 LS1, 5.7L/346 LS6, 6.0L/364 LS1
Engine family : Chevy LS Series Gen-III/IV Small Block V8
Application :

Fits LS1 and LS6 engines with 24x crank trigger, 1x cam, drive by wire throttle body, and 4L60 or 4L80 transmissions


Holley Terminator X, LS1 and LS6 engines with 24x crank trigger, 1x cam, drive by wire throttle body, and 4L60 or 4L80 transmissions


  • For GM LS1/LS6 engines with 24x crank reluctor with EV1 injectors and 4L60/4L80E transmissions, and drive-by wire throttle body control.
  • 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 Max systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.
  • On-Board 1bar MAP sensor, is perfect for N/A or Nitrous engine combos. If your combination requires a 2+Bar, we recommend GM 12592525, and our adapter part number 558-416.
  • 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
  • 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!
  • 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
  • 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; analog 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
  • Recommended Pedal part number – 10379038
  • Includes: 24x LS Engine Main Harness – EV1 Injector Harness – DBW Throttle Body Harness – 4L60/4L80 Transmission Control Harness – Terminator X MAX ECU – ECU Main Power Harness – Bosch LSU 4.9 Wideband Oxygen Sensor – Input/Output Harness

Additional information

Weight 10 lbs
Dimensions 13 × 12 × 9 in