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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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Specs
- Vehicle modelLS 4.8, 5.3, 6.0 Truck Engines
- Vehicle makeChevy
- Vehicle fitment typeUniversal
- Automotive parts divisionPerformance
- BrandHOLLEY EFI
- Automotive specialty part typeEngine Control Unit
Current price is USD$1,849.95
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Columbus, 43215
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About this item
Product details
GM LS 24x Crank, 1x Cam - 4.8/5.3/6.0 Truck Engines - Multec 2 Injector Harness - 4L60E/4L80E Transmission Control, USB/CAN Tuning Cable;
Take control of your LS engine with Terminator X Max! 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 Max 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 NOS control, and much more. Part number 550-917 also has 4L60E or 4L80E Transmission control. Terminator X Max comes fully loaded with base maps for common LS engine combinations to get you out of the garage and on the road/track fast. These Terminator X kits include a USB/CAN tuning cable instead of the 3.5 in. Handheld LCD, these kits require the use of the free Terminator X Software for initial setup. The Terminator X Software includes multiple base calibrations to choose from for either naturally aspirated or boosted engines. 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 MAX has the features and technology you need at a price that won't break the bank!;
Take control of your LS engine with Terminator X Max! 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 Max 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 NOS control, and much more. Part number 550-917 also has 4L60E or 4L80E Transmission control. Terminator X Max comes fully loaded with base maps for common LS engine combinations to get you out of the garage and on the road/track fast. These Terminator X kits include a USB/CAN tuning cable instead of the 3.5 in. Handheld LCD, these kits require the use of the free Terminator X Software for initial setup. The Terminator X Software includes multiple base calibrations to choose from for either naturally aspirated or boosted engines. 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 MAX has the features and technology you need at a price that won't break the bank!;
- For GM LS 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, Transmission Control, and Multec 2 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 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 â€" Â1/4 and 3/16ths)
- 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
- 4 Outputs â€" Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
- 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 AFRadjustable through included 3.5†full color touchscreen, base tune easily created via handheld Wizard!
- 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
- Includes: 24x LS Engine Main Harness - Multec 2 Injector Harness - 4L60E/4L80E Transmission Control Harness - Terminator X MAX ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - Input/Output Harness - and assorted vacuum adapters.
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Specifications
Vehicle model
LS 4.8, 5.3, 6.0 Truck Engines
Vehicle make
Chevy
Vehicle fitment type
Universal
Automotive parts division
Performance
Warranty
Warranty information
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Warnings
Warning Text
California Proposition 65
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|---|
| Vehicle model | LS 4.8Holley EFI 550-917T Terminator X Max MPFI System | Terminator X StealthHolley EFI 534-292 Terminator X Stealth 4150 Throttle Body 4 Injectors Shiny | Holley 543-124Holley EFI 543-124 Throttle Position Sensor | CoyoteHolley EFI 300-924 Ultra Lo-Ram Throttle Body Adapter Coyote - As Cast Finish | FoxbodyHolley EFI 558-513 EFI MPFI Harness Kits | 550-511-BPX-SBFHolley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford | 570-240Holley EFI 570-240 Manifold Absolute Pressure Sensor | Terminator XHolley EFI 534-236 Stealth 4150 Braided Fuel Crossover Kit | 300-676BKHolley 300-676BK 105mm Throttle Body Adapter Cast Black Finish |
|---|---|---|---|---|---|---|---|---|---|
| Vehicle make | ChevyHolley 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 Sensor | FordHolley EFI 300-924 Ultra Lo-Ram Throttle Body Adapter Coyote - As Cast Finish | FordHolley EFI 558-513 EFI MPFI Harness Kits | FordHolley 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 type | UniversalHolley EFI 550-917T Terminator X Max MPFI System | SpecificHolley EFI 534-292 Terminator X Stealth 4150 Throttle Body 4 Injectors Shiny | UniversalHolley EFI 543-124 Throttle Position Sensor | SpecificHolley EFI 300-924 Ultra Lo-Ram Throttle Body Adapter Coyote - As Cast Finish | SpecificHolley EFI 558-513 EFI MPFI Harness Kits | SpecificHolley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford | SpecificHolley EFI 570-240 Manifold Absolute Pressure Sensor | SpecificHolley EFI 534-236 Stealth 4150 Braided Fuel Crossover Kit | SpecificHolley 300-676BK 105mm Throttle Body Adapter Cast Black Finish |
| Automotive specialty part type | Engine Control UnitHolley EFI 550-917T Terminator X Max MPFI System | Throttle BodyHolley EFI 534-292 Terminator X Stealth 4150 Throttle Body 4 Injectors Shiny | Throttle Position SensorHolley EFI 543-124 Throttle Position Sensor | -Holley EFI 300-924 Ultra Lo-Ram Throttle Body Adapter Coyote - As Cast Finish | Engine 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 Sensor | Fuel 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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