SKU: 27583900271

Terminator X Max 58x/4x EV6 LS MPFI w/ Trans Control w/o 3.5 Handheld -550-918T

Sale price$877.48 Regular price$974.98
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Terminator X Max 58x/4x EV6 LS MPFI w/ Trans Control w/o 3.5 Handheld -550-918TOverview: 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

Overview:

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 nitrous 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" 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!

Features:

  • 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 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 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 – 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
  • 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!
  • 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
  • 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 - 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.

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley EFI
Crank Reluctor 58x
Emission Code 3
Ignition Type GM LS 58x
Injector Connector USCAR (EV6)
Product Type Terminator X Max LS MPFI
Terminator LS Options Fuel, Spark, Transmission
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: 27583900271

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 2077 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
K
Verified Purchase
Kim S
Lake Worth, US
★★★★★ 5
Great buy!!!
Size: 11, Color: Dark Brown
Very happy with shoes, color was good. Size was perfect. Comfort was great!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
R
Verified Purchase
Richard
Boise, US
★★★★★ 3
Ok. Not great
Size: 8.5 Wide, Color: Brown
They look great but not that comfortable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
K
Verified Purchase
Kindle Customer
Charlottesville, US
★★★★★ 5
Soft, fluffy, wash and dry perfectly, snuggly, comfy--GET A FEW! You will love them!
Color: 01 - White, Size: Twin (60" X 80")
This is my third purchase of this item! I love these blankets--soft, fluffy, snuggly, but lightweight. They keep you warm but not overly so--I miss these when I travel because hotels just don;t have anything even close to these soft blankets! I have them in the MBR, Guest BR and an extra. I also bought one recently to line the seat of a wagon for toddlers who will be riding along with the bridal party--will keep them comfy but since it isnt bulky it won't interfere with the wagon appearance. The ones I have wash up very nicely and I do put them in the dryer on low and they come up nice and fluffy--the price is fantastic too! For storing themm, they take almost no room at all! Get a couple-your sleep and sweet dreams will thank you!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
P
Verified Purchase
Pinky1stState
Boise, US
★★★★★ 5
After 8 years, still a great blanket! Holds up to pets too!
Color: Grey, Size: King (108" x 90")
This is a lovely king-size blanket. It is lightweight comfort for chilly days. It can be used with other blankets for additional warmth as needed. I have two older Bedsure king-size blankets (teal and camel) that are 8 years old now and they have maintained their color. I used them for bedspreads for queen-size beds that cover well. They do have some slight wear but are still in good shape - holding up to cats and dogs. The latest purchase are two grey king-size blankets that I am using to cover an old, two-cushion style couch. I needed the extra width for tucking in the cushions and completely covering the arms, sides, and back of the couch. The new look and comfort is also holding up to the 10-year old dog who likes to nap on the couch occasionally. I have found that these blankets do well with spot cleaning as needed. Pet hair does not seem to cling to these blankets and as needed, I use a lint brush. When washing, I wash them on gentle cycle with regular detergent. I use a little vinegar in the rinse cycle. I hang them outside to dry and they dry quickly. On a rare occasion I use the dryer and when I do, there is very little lint from blanket. With the new grey blankets, I followed the gentle reminder noted on the plastic bag and - took the blanket directly from the bag (there was no smell) and put it in the dryer on low heat (about 15 to 20 minutes) and it came out full looking and fluffy soft (luxurious feeling actually). I really like these blankets and recommend them highly to friends and family. I hope this is helpful to you.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
N
Verified Purchase
Nelli Peftiieva
Boise, US
★★★★★ 5
Very soft and cozy
Color: Grey, Size: Queen (90" X 90")
I bought this for the bed, but the second it arrived my husband claimed it. It is so incredibly soft and cozy, but lightweight enough that you don't overheat. The grey color looks great with our decor, and I love that it doesn't get static- like other fleece blankets. It also washed really well and didn't shed at all.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026

recommand products