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Holley EFI 550-920T Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld
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Key item features
- Engine Compatibility: Designed for GM LS 4.8/5.3/6.0 LS Truck Engines and LS2/LS3 with 58x Crank, 4x Cam, and 4L60E/4L80E transmissions, utilizing EV1 Injectors.
- Advanced Tuning: Features real-time fuel map learning, high impedance injector drivers, and a Bosch LSU 4.9 wideband for accurate AFR readings and precise tuning.
- Integrated Sensors: Includes an on-board 1bar MAP sensor suitable for N/A or Nitrous engine combinations, with vacuum hose adapters provided.
- Versatile I/O: Equipped with 4 configurable inputs (12v, Ground, 5v, Frequency) and 4 configurable outputs (Ground, PWM-) for various accessories and control functions.
- Control Features: Offers comprehensive boost control (vs. Time, Gear, RPM, Speed, Safeties) and single-channel nitrous control (Wet/Dry, Progressive/Non-Progressive, Safeties, Closed Loop AFR).
- Diagnostic Aids: On-board diagnostic LEDs for ECU Power, Engine Run, Wideband Status, TPS Calibration, Crank Signal, and Cam Signal allow for quick issue identification.
- Software Access: Comes with a CAN/USB tuning cable and free EFI Tuning Software for real-time configuration and engine tuning, including multiple base calibrations.
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Specs
- Vehicle makeGM
- BrandHOLLEY EFI
- Automotive parts divisionPerformance
- Vehicle fitment typeSpecific
- SeriesTerminator X Max
- Model550-920T
Current price is USD$1,849.95
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Columbus, 43215
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| Product | Viewing this itemHolley EFI 550-920T Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld ![]() $1,849.95 current price $1,849.95 | Holley EFI 550-917 Fuel Injection System ![]() $1,899.95 current price $1,899.9584.3 out of 5 Stars. 8 reviews | Holley EFI Terminator X Max Mpfi W/Dbw, Ls1 ![]() $1,849.95 current price $1,849.95 | Holley EFI 550-920 Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control ![]() $1,899.95 current price $1,899.95 | Holley EFI 550-933 Terminator X Max 58x/4x EV1 LS MPFI Kit with DBW Throttle Body Control ![]() $1,899.95 current price $1,899.95 | Holley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control ![]() $1,849.95 current price $1,849.95 | Holley EFI 550-929 Fuel Injection System ![]() $1,849.95 current price $1,849.95 | Terminator X Max MPFI System ![]() $1,899.95 current price $1,899.9515 out of 5 Stars. 1 reviews | Holley EFI 550-932 Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control ![]() $1,899.95 current price $1,899.95 | Holley EFI 550-930 Fuel Injection System ![]() $1,849.95 current price $1,849.95 |
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| Vehicle make | GMHolley EFI 550-920T Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld | GMHolley EFI 550-917 Fuel Injection System | GMHolley EFI Terminator X Max Mpfi W/Dbw, Ls1 | GMHolley EFI 550-920 Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control | GMHolley EFI 550-933 Terminator X Max 58x/4x EV1 LS MPFI Kit with DBW Throttle Body Control | -Holley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control | GMHolley EFI 550-929 Fuel Injection System | ChevyTerminator X Max MPFI System | GMHolley EFI 550-932 Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control | GMHolley EFI 550-930 Fuel Injection System |
|---|---|---|---|---|---|---|---|---|---|---|
| Automotive parts division | PerformanceHolley EFI 550-920T Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld | PerformanceHolley EFI 550-917 Fuel Injection System | PerformanceHolley EFI Terminator X Max Mpfi W/Dbw, Ls1 | PerformanceHolley EFI 550-920 Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control | PerformanceHolley EFI 550-933 Terminator X Max 58x/4x EV1 LS MPFI Kit with DBW Throttle Body Control | PerformanceHolley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control | PerformanceHolley EFI 550-929 Fuel Injection System | PerformanceTerminator X Max MPFI System | PerformanceHolley EFI 550-932 Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control | PerformanceHolley EFI 550-930 Fuel Injection System |
| Vehicle fitment type | SpecificHolley EFI 550-920T Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld | SpecificHolley EFI 550-917 Fuel Injection System | SpecificHolley EFI Terminator X Max Mpfi W/Dbw, Ls1 | SpecificHolley EFI 550-920 Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control | SpecificHolley EFI 550-933 Terminator X Max 58x/4x EV1 LS MPFI Kit with DBW Throttle Body Control | UniversalHolley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control | SpecificHolley EFI 550-929 Fuel Injection System | UniversalTerminator X Max MPFI System | SpecificHolley EFI 550-932 Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control | SpecificHolley EFI 550-930 Fuel Injection System |
| Series | Terminator X MaxHolley EFI 550-920T Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld | Terminator X MaxHolley EFI 550-917 Fuel Injection System | Terminator X MaxHolley EFI Terminator X Max Mpfi W/Dbw, Ls1 | Terminator X MaxHolley EFI 550-920 Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control | Terminator X MaxHolley EFI 550-933 Terminator X Max 58x/4x EV1 LS MPFI Kit with DBW Throttle Body Control | Terminator XHolley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control | -Holley EFI 550-929 Fuel Injection System | -Terminator X Max MPFI System | Terminator X MaxHolley EFI 550-932 Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control | Terminator X MaxHolley EFI 550-930 Fuel Injection System |
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About this item
Product details
GM LS 58x Crank, 4x Cam - 4.8/5.3/6.0 Truck Engines and LS2/LS3 - 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 550-918 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 550-918 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!;
- Designed for GM LS 4.8/5.3/6.0 LS Truck Engines and LS2/LS3 with 58x Crank, 4x Cam and 4L60E/4L80E transmissions, and EV1 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 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
- Includes: 58x/4x LS Engine Main Harness - EV1 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 make
GM
Vehicle model
LS 4.8, 5.3, 6.0 LS Truck Engines and LS2, LS3
Fuel injection accessory & part type
Terminator X Max ECU, 58x/4x LS Engine Main Harness, EV1 Injector Harness, 4L60E/4L80E Transmission Control Harness, Bosch LSU 4.9 Wideband Oxygen Sensor, Input/Output Harness, assorted vacuum adapters
Brand
HOLLEY EFI
Warnings
Warning Text
California Proposition 65
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