Holley EFI 550-917T Terminator X Max MPFI System
Holley EFI 550-917T Terminator X Max MPFI System
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Holley EFI 550-917T Terminator X Max MPFI System

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Key item features

  • Engine Compatibility: Designed for GM LS 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, Multec 2 Injectors, and 4L60E/4L80E Transmission Control.
  • Tuning Capabilities: Features real-time fuel map learning, high impedance injector drivers, and utilizes a Bosch LSU 4.9 wideband for accurate AFR readings.
  • Integrated Sensors: Includes an on-board 1bar MAP sensor suitable for N/A or Nitrous setups, with vacuum hose adapters provided.
  • Versatile I/O: Offers 4 programmable inputs (12v, Ground, 5v, Frequency) and 4 outputs (Ground, PWM-) for accessories like fans, boost control, and nitrous.
  • Advanced Controls: Provides comprehensive boost control (vs. Time, Gear, RPM, Speed) and single-channel nitrous control with safeties and target AFR adjustment.
  • Diagnostic & Software: Equipped with on-board diagnostic LEDs and includes a CAN/USB tuning cable for real-time configuration using free EFI Tuning Software.
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Columbus, 43215
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Holley EFI 550-917T Terminator X Max MPFI System
Holley EFI 550-917T Terminator X Max MPFI System
current price $1,849.95
Holley EFI 550-917T Terminator X Max MPFI System
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Comparison Chart:
Vehicle modelLS 4.8Holley EFI 550-917T Terminator X Max MPFI SystemTerminator X StealthHolley EFI 534-292 Terminator X Stealth 4150 Throttle Body 4 Injectors ShinyHolley 543-124Holley EFI 543-124 Throttle Position SensorCoyoteHolley EFI 300-924 Ultra Lo-Ram Throttle Body Adapter Coyote - As Cast FinishFoxbodyHolley EFI 558-513 EFI MPFI Harness Kits550-511-BPX-SBFHolley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford570-240Holley EFI 570-240 Manifold Absolute Pressure SensorTerminator XHolley EFI 534-236 Stealth 4150 Braided Fuel Crossover Kit300-676BKHolley 300-676BK 105mm Throttle Body Adapter Cast Black Finish
Vehicle makeChevyHolley EFI 550-917T Terminator X Max MPFI System-Holley EFI 534-292 Terminator X Stealth 4150 Throttle Body 4 Injectors Shiny-Holley EFI 543-124 Throttle Position SensorFordHolley EFI 300-924 Ultra Lo-Ram Throttle Body Adapter Coyote - As Cast FinishFordHolley EFI 558-513 EFI MPFI Harness KitsFordHolley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford-Holley EFI 570-240 Manifold Absolute Pressure Sensor-Holley EFI 534-236 Stealth 4150 Braided Fuel Crossover Kit-Holley 300-676BK 105mm Throttle Body Adapter Cast Black Finish
Vehicle fitment typeUniversalHolley EFI 550-917T Terminator X Max MPFI SystemSpecificHolley EFI 534-292 Terminator X Stealth 4150 Throttle Body 4 Injectors ShinyUniversalHolley EFI 543-124 Throttle Position SensorSpecificHolley EFI 300-924 Ultra Lo-Ram Throttle Body Adapter Coyote - As Cast FinishSpecificHolley EFI 558-513 EFI MPFI Harness KitsSpecificHolley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits FordSpecificHolley EFI 570-240 Manifold Absolute Pressure SensorSpecificHolley EFI 534-236 Stealth 4150 Braided Fuel Crossover KitSpecificHolley 300-676BK 105mm Throttle Body Adapter Cast Black Finish
Automotive specialty part typeEngine Control UnitHolley EFI 550-917T Terminator X Max MPFI SystemThrottle BodyHolley EFI 534-292 Terminator X Stealth 4150 Throttle Body 4 Injectors ShinyThrottle Position SensorHolley EFI 543-124 Throttle Position Sensor-Holley EFI 300-924 Ultra Lo-Ram Throttle Body Adapter Coyote - As Cast FinishEngine HarnessHolley EFI 558-513 EFI MPFI Harness Kits-Holley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford-Holley EFI 570-240 Manifold Absolute Pressure SensorFuel Crossover KitHolley EFI 534-236 Stealth 4150 Braided Fuel Crossover Kit-Holley 300-676BK 105mm Throttle Body Adapter Cast Black Finish
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