Holley EFI 550-931T Terminator X Max MPFI System
Holley EFI 550-931T Terminator X Max MPFI System
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Holley EFI 550-931T Terminator X Max MPFI System

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Key item features

  • Designed for GM 4.8/5.3/6.0 LS Truck Engines and LS2/LS3 with 58x Crank, 4x Cam and a Drive-By-Wire Throttle Body, with 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.
  • 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.
  • 4 Outputs â€" Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
  • 4 Inputs â€" 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
  • Boost Control â€" Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
  • Nitrous Control â€" Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
  • Advanced Tables â€" 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 â€" Engine Run â€" Wideband Status â€" TPS Calibration â€" Crank Signal â€"Cam Signal. Allow you to identify any Critical engine issues at a glance
  • Includes CAN/USB tuning cable allowing you to configure your ECU and Tuning the engine in real time.
  • 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: 58x/4x LS Engine Main Harness - EV6 Injector Harness - DBW Throttle Body Harness - Terminator X MAX ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - Input/Output Harness - and assorted vacuum adapters.
Current price is $1,849.95
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Comparison Chart:
Vehicle makeChevyHolley EFI 550-931T Terminator X Max MPFI SystemGMHolley EFI 550-930 Fuel Injection SystemGMHolley EFI 550-920 Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission ControlChevyHolley EFI 550-933T Terminator X Max MPFI SystemChryslerHolley EFI 550-1224 Terminator X HEMI Gen III 2007-2013 KitFordHolley EFI 550-1221 Terminator X Ford Mod Motor 2V & 4V KitGMHolley EFI 550-917 Fuel Injection SystemGMHolley EFI 550-927 Fuel Injection SystemChryslerHolley EFI 550-1223 Terminator X HEMI Gen III 2003-2006 Kit-Holley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control
Vehicle model4.8Holley EFI 550-931T Terminator X Max MPFI System4.8Holley EFI 550-930 Fuel Injection SystemLSHolley EFI 550-920 Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control4.8Holley EFI 550-933T Terminator X Max MPFI SystemGEN III HEMIHolley EFI 550-1224 Terminator X HEMI Gen III 2007-2013 KitMustangHolley EFI 550-1221 Terminator X Ford Mod Motor 2V & 4V KitLS 4.8Holley EFI 550-917 Fuel Injection SystemLS 4.8Holley EFI 550-927 Fuel Injection SystemGEN III HEMIHolley EFI 550-1223 Terminator X HEMI Gen III 2003-2006 Kit-Holley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control
Automotive parts divisionPerformanceHolley EFI 550-931T Terminator X Max MPFI SystemPerformanceHolley EFI 550-930 Fuel Injection SystemPerformanceHolley EFI 550-920 Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission ControlPerformanceHolley EFI 550-933T Terminator X Max MPFI SystemPerformanceHolley EFI 550-1224 Terminator X HEMI Gen III 2007-2013 KitPerformanceHolley EFI 550-1221 Terminator X Ford Mod Motor 2V & 4V KitPerformanceHolley EFI 550-917 Fuel Injection SystemPerformanceHolley EFI 550-927 Fuel Injection SystemPerformanceHolley EFI 550-1223 Terminator X HEMI Gen III 2003-2006 KitPerformanceHolley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control
Vehicle fitment typeUniversalHolley EFI 550-931T Terminator X Max MPFI SystemSpecificHolley EFI 550-930 Fuel Injection SystemSpecificHolley EFI 550-920 Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission ControlSpecificHolley EFI 550-933T Terminator X Max MPFI SystemSpecificHolley EFI 550-1224 Terminator X HEMI Gen III 2007-2013 KitSpecificHolley EFI 550-1221 Terminator X Ford Mod Motor 2V & 4V KitSpecificHolley EFI 550-917 Fuel Injection SystemSpecificHolley EFI 550-927 Fuel Injection SystemSpecificHolley EFI 550-1223 Terminator X HEMI Gen III 2003-2006 KitUniversalHolley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control
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