SKU: 3089165425

Holley Terminator X Engine Management Systems 550-905

Sale price$719.98 Regular price$799.98
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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

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Description

Holley Terminator X Engine Management Systems 550-905TERMINATOR X MPFI, LS2 LS3 & LATE TRUCK 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

TERMINATOR X MPFI, LS2/LS3 & LATE TRUCK

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 nitrous 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. The 3.5" touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. 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!

Features:

  • 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 – ¼ and 3/16ths)
  • 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
  • 4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
  • Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
  • Nitrous Control – 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 – Engine Run – Wideband Status – TPS Calibration – Crank Signal –Cam Signal. Allow you to identify any Critical engine issues at a glance
  • Advanced Tables – 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!adjustable through included 3.5” f
  • The included 3.5" Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any LS engine. Additionally the handheld provides internal data-logging and a fully customizable gauge display.
  • 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.

Specs

Brand Holley EFI
Crank Reluctor 58x
Emission Code 3
Ignition Type GM LS 58x
Injector Connector USCAR (EV6)
Product Type Terminator X LS MPFI
Terminator LS Options Fuel, Spark
Part Number 550-905
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3089165425

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Dara
Lexington, US
★★★★★ 4
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Size: 6 Fl Oz (Pack of 1)
Having used the COOLA Organic Sunscreen SPF 70 Sunblock Spray, I wanted to share my thoughts on this product. Overall, I found it to be a good sunscreen option, although there were a couple of aspects that prevented me from giving it a full five stars. On the positive side, the organic formula is a definite plus for those who are conscious of what they put on their skin. The SPF 70 protection worked well, shielding me from sunburn even during extended outdoor activities. The spray application is convenient and mess-free, making it a great choice for on-the-go use. I also appreciate the eco-friendly approach of COOLA products, which aligns with my values. However, there were a couple of downsides I encountered. Firstly, the scent of the sunscreen is quite strong upon application. Although it does dissipate relatively quickly, it might be a concern for those sensitive to fragrances. Secondly, I noticed that the spray nozzle occasionally became clogged, leading to uneven coverage at times. While these issues didn't majorly impact my experience, they did play a role in my overall rating. If COOLA can address the scent intensity and nozzle clogging, it would significantly improve the product. In summary, the COOLA Organic Sunscreen SPF 70 Sunblock Spray offers effective sun protection with organic ingredients and a convenient spray format. However, the strong scent and occasional nozzle issues led me to rate it four stars. With a bit of refinement, this could easily become a top-tier sunscreen choice.
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Reviewed in the United States on August 6, 2023
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Shirley E.Kulesza
Port Orchard, US
★★★★★ 5
Works great
Size: 6 Fl Oz (Pack of 1)
Great stuff
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Reviewed in the United States on May 17, 2026
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thepastyharlot
Massapequa, US
★★★★★ 5
Works & Smells Great
Size: 6 Fl Oz (Pack of 1)
This product smells so nice and isn't sticky or tacky on the skin. I feel like it absorbed quite well. We used this in Vegas recently and I had a few soft red spots that went away a couple days later. Yes, we re-applied, but it is VERY bright in Vegas at the pool. This will probably become my go-to spray sunscreen. As my mobility can be limited, spray sunscreens have really helped me make sure I get all areas that are exposed to the sun.
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Reviewed in the United States on June 24, 2024
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Amazon Customer
Pawtucket, US
★★★★★ 5
Love this!
Size: 6 Fl Oz (Pack of 2)
I normally hate all sunscreen. I dont like lotion or anything on my skin cause I feel trapped. This is light and covers well. I am a softball coach so I am used to being out in the summer time with fair skin. I used as recommended and did not get burnt once. and the Peach Blossom smells great without being overpowering.
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Reviewed in the United States on June 20, 2024
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MyOpinionMatters
New York, US
★★★★★ 5
Works well, smells great, goes on easily
Sun protection factor: 15 Sun Protection Factor (SPF), Size: 6 Count (Pack of 2)
It smells good. It goes on easily with the spray bottle. It keeps me from burning while out biking. It's a good price. Overall, a very nice product that does what it should. We carry it in our bike packs and in the car when we know we'll be out in the sun all day. Doesn't feel heavy when sprayed on so it smooths over your skin very well. Keeps me from burning.
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Reviewed in the United States on July 9, 2025

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