

Hero image 0 of Holley EFI 550-905T Terminator X 58x/4x EV6 LS MPFI Kit - Without 3.5" Handheld, 0 of 10
Holley EFI 550-905T Terminator X 58x/4x EV6 LS MPFI Kit - Without 3.5" Handheld
(No ratings yet)
Check if this fits your vehicle
Key item features
- Engine Compatibility: Designed for GM LS engines with 58x crank, 4x cam, and EV6 injectors, including 4.8/5.3/6.0 truck engines and LS2/LS3.
- Tuning Capabilities: Features real-time fuel map learning, an integrated 1-bar MAP sensor, and includes a USB/CAN tuning cable for laptop configuration with free EFI tuning software.
- Injector Control: High impedance injector drivers safely power most stock LS and Holley EFI injectors, with an injector support chart provided in instructions.
- Advanced I/O: Offers 4 programmable inputs (12v, Ground, 5v, Frequency) and 4 programmable outputs (Ground, PWM-) for accessories like fans, boost control, and nitrous.
- Diagnostic Features: On-board diagnostic LEDs for ECU power, engine run, wideband status, TPS calibration, crank signal, and cam signal allow for quick issue identification.
- Control Options: Includes boost control (vs. time, gear, RPM, speed, safeties) and single-channel nitrous control (wet/dry, progressive/non-progressive, safeties, closed-loop AFR).
Generated by AI
Specs
- Vehicle makeGM
- Vehicle modelLS
- Fuel injection accessory & part typePFI KIT
- BrandHOLLEY EFI
- Automotive parts divisionPerformance
- Vehicle fitment typeSpecific
Current price is USD$1,399.95
Price when purchased online
- Free shipping
Free 90-day returns
How do you want your item?
Try 30 days of Free Shipping with Walmart+! Choose plan at checkout.
Columbus, 43215
Arrives by Tomorrow
.Order within 5 hr 50 min
Sold and shipped by Walmart.com
Free 90-day returns
This item is gift eligible
More seller options (1)
Starting from $1,422.45
Compare with similar items
| Product | Viewing this itemHolley EFI 550-905T Terminator X 58x/4x EV6 LS MPFI Kit - Without 3.5" Handheld ![]() $1,399.95 current price $1,399.95 | Holley EFI 550-910T Terminator X 58x/4x EV1 LS MPFI Kit - Without 3.5" Handheld ![]() $1,399.95 current price $1,399.95 | Holley EFI 550-903 Fuel Injection System ![]() $1,499.95 current price $1,499.9535 out of 5 Stars. 3 reviews | Holley EFI 550-916T Terminator X Max 24x/1x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld ![]() $1,849.95 current price $1,849.95 | Holley EFI 558-502 Fuel Injection Harness ![]() $972.95 current price $972.95 | Holley EFI 550-904T Terminator X 24x/1x Multec 2 LS MPFI Kit - Without 3.5" Handheld ![]() $1,399.95 current price $1,399.95 | Holley EFI 550-904 Fuel Injection System ![]() $1,499.95 current price $1,499.95 | Holley EFI 550-932T Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control - Without 3.5" Handheld ![]() $1,849.95 current price $1,849.95 | Terminator X MPFI System ![]() $1,499.95 current price $1,499.9535 out of 5 Stars. 3 reviews | Holley EFI 558-101 Fuel Injection Harness ![]() $649.95 current price $649.95 |
|---|
| Vehicle make | GMHolley EFI 550-905T Terminator X 58x/4x EV6 LS MPFI Kit - Without 3.5" Handheld | GMHolley EFI 550-910T Terminator X 58x/4x EV1 LS MPFI Kit - Without 3.5" Handheld | GMHolley EFI 550-903 Fuel Injection System | GMHolley EFI 550-916T Terminator X Max 24x/1x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld | GMHolley EFI 558-502 Fuel Injection Harness | GMHolley EFI 550-904T Terminator X 24x/1x Multec 2 LS MPFI Kit - Without 3.5" Handheld | Morris, ChevroletHolley EFI 550-904 Fuel Injection System | GMHolley EFI 550-932T Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control - Without 3.5" Handheld | GMTerminator X MPFI System | -Holley EFI 558-101 Fuel Injection Harness |
|---|---|---|---|---|---|---|---|---|---|---|
| Vehicle model | LSHolley EFI 550-905T Terminator X 58x/4x EV6 LS MPFI Kit - Without 3.5" Handheld | LSHolley EFI 550-910T Terminator X 58x/4x EV1 LS MPFI Kit - Without 3.5" Handheld | 550-903Holley EFI 550-903 Fuel Injection System | LS1Holley EFI 550-916T Terminator X Max 24x/1x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld | LS2Holley EFI 558-502 Fuel Injection Harness | LSHolley EFI 550-904T Terminator X 24x/1x Multec 2 LS MPFI Kit - Without 3.5" Handheld | 550-904Holley EFI 550-904 Fuel Injection System | LS1Holley EFI 550-932T Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control - Without 3.5" Handheld | LS1Terminator X MPFI System | 558-101Holley EFI 558-101 Fuel Injection Harness |
| Fuel injection accessory & part type | PFI KITHolley EFI 550-905T Terminator X 58x/4x EV6 LS MPFI Kit - Without 3.5" Handheld | -Holley EFI 550-910T Terminator X 58x/4x EV1 LS MPFI Kit - Without 3.5" Handheld | Terminator XHolley EFI 550-903 Fuel Injection System | erminator X Max LS MPFIHolley EFI 550-916T Terminator X Max 24x/1x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld | Fuel Injection HarnessHolley EFI 558-502 Fuel Injection Harness | -Holley EFI 550-904T Terminator X 24x/1x Multec 2 LS MPFI Kit - Without 3.5" Handheld | Fuel Injection SystemHolley EFI 550-904 Fuel Injection System | -Holley EFI 550-932T Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control - Without 3.5" Handheld | -Terminator X MPFI System | Fuel Injection HarnessHolley EFI 558-101 Fuel Injection Harness |
| Automotive parts division | PerformanceHolley EFI 550-905T Terminator X 58x/4x EV6 LS MPFI Kit - Without 3.5" Handheld | PerformanceHolley EFI 550-910T Terminator X 58x/4x EV1 LS MPFI Kit - Without 3.5" Handheld | PerformanceHolley EFI 550-903 Fuel Injection System | PerformanceHolley EFI 550-916T Terminator X Max 24x/1x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld | PerformanceHolley EFI 558-502 Fuel Injection Harness | PerformanceHolley EFI 550-904T Terminator X 24x/1x Multec 2 LS MPFI Kit - Without 3.5" Handheld | PerformanceHolley EFI 550-904 Fuel Injection System | PerformanceHolley EFI 550-932T Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control - Without 3.5" Handheld | PerformanceTerminator X MPFI System | PerformanceHolley EFI 558-101 Fuel Injection Harness |
Now hiding additional rows in the Table
About this item
Product details
GM LS Engines with 58x Crank, 4x Cam - 4.8/5.3/6.0 Truck Engines and LS2/LS3 - EV6 Injector Harness , USB/CAN Tuning Cable;
Take control of your LS engine with Terminator X! 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 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. Terminator X 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 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! 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 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. Terminator X 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 has the features and technology you need at a price that won't break the bank!;
- Designed for GM LS Engines with 58x Crank, 4x Cam - and 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.
- 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
- 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
- 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!
- 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 - EV6 Injector Harness - Terminator X ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - Input/Output Harness - and assorted vacuum adapters.
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it. Â
Specifications
Compatible cars
GM LS Engines with 58x Crank, 4x Cam - 4.8/5.3/6.0 Truck Engines and LS2/LS3
Vehicle make
GM
Vehicle model
LS
Fuel injection accessory & part type
PFI KIT
Warranty
Warranty information
xxxx
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Warranty url
Warnings
Warning Text
California Proposition 65
Similar items you might like
Based on what customers bought
Holley EFI 550-910T Terminator X 58x/4x EV1 LS MPFI Kit - Without 3.5" Handheld $1,399.95
$1,39995current price $1,399.95Holley EFI 550-910T Terminator X 58x/4x EV1 LS MPFI Kit - Without 3.5" Handheld
Save withShipping, arrives in 3+ daysHolley EFI 550-903 Fuel Injection System $1,499.95
$1,49995current price $1,499.95Holley EFI 550-903 Fuel Injection System
35 out of 5 Stars. 3 reviewsSave withShipping, arrives tomorrowHolley EFI 550-916T Terminator X Max 24x/1x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld $1,849.95
$1,84995current price $1,849.95Holley EFI 550-916T Terminator X Max 24x/1x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld
Save withShipping, arrives in 3+ daysHolley EFI 558-502 Fuel Injection Harness $972.95
$97295current price $972.95Holley EFI 558-502 Fuel Injection Harness
Save withShipping, arrives in 3+ daysHolley EFI 550-904T Terminator X 24x/1x Multec 2 LS MPFI Kit - Without 3.5" Handheld $1,399.95
$1,39995current price $1,399.95Holley EFI 550-904T Terminator X 24x/1x Multec 2 LS MPFI Kit - Without 3.5" Handheld
Save withShipping, arrives in 3+ daysHolley EFI 550-904 Fuel Injection System $1,499.95
$1,49995current price $1,499.95Holley EFI 550-904 Fuel Injection System
Save withShipping, arrives in 3+ daysHolley EFI 550-937F Terminator X Foxbody 5.0 MPFI Kit $1,549.95
$1,54995current price $1,549.95Holley EFI 550-937F Terminator X Foxbody 5.0 MPFI Kit
34.3 out of 5 Stars. 3 reviewsSave withShipping, arrives in 3+ daysHolley EFI 550-932T Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control - Without 3.5" Handheld $1,849.95
$1,84995current price $1,849.95Holley EFI 550-932T Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control - Without 3.5" Handheld
Save withShipping, arrives in 3+ daysTerminator X MPFI System $1,499.95
$1,49995current price $1,499.95Terminator X MPFI System
35 out of 5 Stars. 3 reviewsSave withShipping, arrives in 3+ daysHolley EFI 558-440 Fuel Injection Harness $122.95
$12295current price $122.95Holley EFI 558-440 Fuel Injection Harness
Save withShipping, arrives in 3+ daysHolley EFI 558-101 Fuel Injection Harness $649.95
$64995current price $649.95Holley EFI 558-101 Fuel Injection Harness
Save withShipping, arrives in 3+ daysHolley EFI 558-207 Fuel Injection Harness $306.95
$30695current price $306.95Holley EFI 558-207 Fuel Injection Harness
Shipping, arrives in 3+ daysHolley EFI 558-422 Fuel Injection Harness $281.95
$28195current price $281.95Holley EFI 558-422 Fuel Injection Harness
Save withShipping, arrives in 3+ daysHolley EFI 558-424 Fuel Injection Harness $59.25
$5925current price $59.25Holley EFI 558-424 Fuel Injection Harness
Save withShipping, arrives in 3+ daysHolley Performance 12-160 Electric Fuel Pump $87.70
$8770current price $87.70Holley Performance 12-160 Electric Fuel Pump
Save withShipping, arrives in 3+ daysHolley EFI 558-405 Fuel Injection Harness $306.95
$30695current price $306.95Holley EFI 558-405 Fuel Injection Harness
Shipping, arrives in 3+ daysHolley EFI 550-910 Terminator X 58x/4x EV1 LS MPFI Kit $1,499.95
$1,49995current price $1,499.95Holley EFI 550-910 Terminator X 58x/4x EV1 LS MPFI Kit
Save withShipping, arrives in 3+ daysHolley EFI 550-903T Terminator X 24x/1x EV1 LS MPFI Kit - Without 3.5" Handheld $1,399.95
$1,39995current price $1,399.95Holley EFI 550-903T Terminator X 24x/1x EV1 LS MPFI Kit - Without 3.5" Handheld
Save withShipping, arrives in 3+ daysHolley EFI 558-204 Fuel Injection Harness $230.95 Was $254.95
Now$23095current price Now $230.95, Was $254.95$254.95Holley EFI 558-204 Fuel Injection Harness
Shipping, arrives in 3+ daysTerminator X LS1 MPFI System $1,499.95
$1,49995current price $1,499.95Terminator X LS1 MPFI System
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ days
Popular items in this category
Best selling items that customers love
Holley EFI 550-918T Terminator X Max 58x/4x EV6 LS MPFI Kit with Transmission Control - Without 3.5" Handheld $1,849.95
$1,84995current price $1,849.95Holley EFI 550-918T Terminator X Max 58x/4x EV6 LS MPFI Kit with Transmission Control - Without 3.5" Handheld
Save withShipping, arrives in 3+ daysHolley EFI 550-920T Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld $1,849.95
$1,84995current price $1,849.95Holley EFI 550-920T Terminator X Max 58x/4x EV1 LS MPFI Kit with Transmission Control - Without 3.5" Handheld
Save withShipping, arrives in 3+ daysHolley EFI 550-919T Terminator X Max 24x/1x EV6 LS MPFI Kit with Transmission Control - Without 3.5" Handheld $1,849.95
$1,84995current price $1,849.95Holley EFI 550-919T Terminator X Max 24x/1x EV6 LS MPFI Kit with Transmission Control - Without 3.5" Handheld
Save withShipping, arrives in 3+ daysHolley EFI 550-934T Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body and Transmission Control - Without 3.5" Handheld $2,049.95
$2,04995current price $2,049.95Holley EFI 550-934T Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body and Transmission Control - Without 3.5" Handheld
Save withShipping, arrives in 3+ daysHolley EFI 550-934 Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body and Transmission Control $2,099.95
$2,09995current price $2,099.95Holley EFI 550-934 Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body and Transmission Control
15 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ daysHolley EFI 550-932 Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control $1,899.95
$1,89995current price $1,899.95Holley EFI 550-932 Terminator X Max 24x/1x EV6 LS MPFI Kit with DBW Throttle Body Control
Save withShipping, arrives in 3+ daysHolley EFI 550-936 Terminator X MPFI System $1,499.95
$1,49995current price $1,499.95Holley EFI 550-936 Terminator X MPFI System
15 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ daysHolley EFI 550-917T Terminator X Max MPFI System $1,849.95
$1,84995current price $1,849.95Holley EFI 550-917T Terminator X Max MPFI System
Save withShipping, arrives in 3+ daysHolley EFI 550-937 Terminator X Ford MPFI Kit $1,449.95
$1,44995current price $1,449.95Holley EFI 550-937 Terminator X Ford MPFI Kit
15 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ daysHolley EFI 550-1216 Terminator X Ford Mod Motor 2V Kit $1,949.95
$1,94995current price $1,949.95Holley EFI 550-1216 Terminator X Ford Mod Motor 2V Kit
14 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ daysHolley EFI 550-959 Terminator X Max Universal MPFI Kit w/ Trans & DBW Control $2,049.95
$2,04995current price $2,049.95Holley EFI 550-959 Terminator X Max Universal MPFI Kit w/ Trans & DBW Control
Save withShipping, arrives in 3+ daysHolley EFI 550-1221 Terminator X Ford Mod Motor 2V & 4V Kit $1,949.95
$1,94995current price $1,949.95Holley EFI 550-1221 Terminator X Ford Mod Motor 2V & 4V Kit
Save withShipping, arrives in 3+ daysHolley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control $1,849.95
$1,84995current price $1,849.95Holley EFI 550-950 Terminator X Max Universal MPFI Kit w/ DBW Control
Save withShipping, arrives in 3+ daysHolley EFI 550-942 Terminator X Max Universal MPFI Kit w/ Transmission Control $1,899.95
$1,89995current price $1,899.95Holley EFI 550-942 Terminator X Max Universal MPFI Kit w/ Transmission Control
Save withShipping, arrives in 3+ daysHolley EFI 550-1002 Terminator X Stealth 4150, Black $1,999.95
$1,99995current price $1,999.95Holley EFI 550-1002 Terminator X Stealth 4150, Black
15 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ daysHolley EFI 550-1005 Terminator X Stealth 4150, Black $2,509.95
$2,50995current price $2,509.95Holley EFI 550-1005 Terminator X Stealth 4150, Black
Save withShipping, arrives in 3+ daysHolley EFI 550-1631 Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit $3,299.95
$3,29995current price $3,299.95Holley EFI 550-1631 Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit
Save withShipping, arrives in 3+ daysHolley EFI 550-1631LSD Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit $3,399.95
$3,39995current price $3,399.95Holley EFI 550-1631LSD Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit
Save withShipping, arrives in 3+ daysHolley EFI 550-1015 Terminator X Max Stealth 4150 with Transmission Control, Black $2,819.95
$2,81995current price $2,819.95Holley EFI 550-1015 Terminator X Max Stealth 4150 with Transmission Control, Black
Save withShipping, arrives in 3+ daysHolley EFI 550-1620LSD Holley EFI Terminator X Max GM Gen V LT Early Direct Injection Kit $3,149.95
$3,14995current price $3,149.95Holley EFI 550-1620LSD Holley EFI Terminator X Max GM Gen V LT Early Direct Injection Kit
Save withShipping, arrives in 3+ days
Customer ratings & reviews
0 ratings|0 reviews
This item does not have any reviews yet
Related pages
- Mercury Mystique Air Intake Kit
- Mercury Cougar Engine Intake Manifold
- Mercury Cougar Air Intake Kit
- Saab 900 Fuel Pressure Regulator
- Holley Hp 750
- Saab 44629 Fuel Pressure Regulator
- Fuel Rails
- Intake Couplings
- Performance Fuel Pumps
- Fuel Injector Cold Start Valves
- Supercharger Couplings
- Performance Fuel Injection






