$138 Off

Holley 550-916 Terminator X Max LS1/LS6 MPFI Kit

$138 Off

#425550916

Holley 550-916 Terminator X Max LS1/LS6 MPFI Kit

Name: Holley 550-916 Terminator X Max LS1/LS6 MPFI Kit
Brand: Holley
SKU: 425550916
Price: 1999.95 USD
Availability: InStock
Rating: 4 (3 reviews)

3 Reviews

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Specifically designed for GM LS1/LS6 engines with 24x crank reluctor
High impedance Injector Drivers will safely power most Stock LS injectors, and Holley EFI Injectors
Included 3.5" Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any LS engine

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Product Summary

Universal Fit, 24x Crank Reluctor, 1x Cam Trigger

Specifically designed for GM LS1/LS6 engines with 24x crank reluctor
High impedance Injector Drivers will safely power most Stock LS injectors, and Holley EFI Injectors
Included 3.5" Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any LS engine
A compact ECU size means that you can virtually mount it anywhere
Features an on-board 1bar MAP sensor

See more details

Key Specs

MFG. Part #	550-916
Ignition Type	Factory GM
Injector Connector	Jetronic / Minitimer (EV1)
Tuner Style	Touchscreen Handheld
Throttle Style	Cable Driven

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Installation Details

Engine Control Modules Installation Instructions (425550916)

Installation Tips

For GM LS1/LS6 engines with 24x crank reluctor with EV1 injectors and 4L60/4L80E transmissions
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
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

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Holley 550-916 Details

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 550-916 also has 4L60 or 4L80 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. 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 MAX has the features and technology you need at a price that won't break the bank!

For GM LS1/LS6 engines with 24x crank reluctor with EV1 injectors and 4L60/4L80E transmissions
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
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

For GM LS1/LS6 engines with 24x crank reluctor with EV1 injectors and 4L60/4L80E transmissions
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
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

Application

For GM LS1/LS6 engines with 24x crank reluctor with EV1 injectors and 4L60/4L80E transmissions.

Specs

**Terminator X ECU's are designed to be mounted with the LED's facing up.

Installation Instructions

Handheld & Reference Manual

Wiring Diagram

Holley EFI Support Forums

Terminator X Software

Guides & Documents

Engine Control Modules Installation Instructions (425550916)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CARB warning

Holley 550-916 Specifications

KEY SPECS
MFG. Part #	550-916
Brand	Holley
Ignition Type	Factory GM
Injector Connector	Jetronic / Minitimer (EV1)
Tuner Style	Touchscreen Handheld
Throttle Style	Cable Driven

GENERAL
Crank Reluctor	24x
Cam Trigger	1x
MAP Sensor Included	Yes
Transmission Control	Yes
Oxygen Sensor Style	Bosch
GTIN Code	090127060827
Sold in Quantity	Kit

Ratings & Reviews

3 Reviews

Overall Assessment

Customers appreciate the product for its impeccable quality and superb usability, especially praising the easy tuning and set-up process. Regardless of the challenging conditions like high elevations and rigorous terrains, the product performs excellently. It outshines competitors due to its practicality and material quality, with many users considering the system as a five-star product. Users have found the speed sensing slightly off in 4WD, but overall, the product has received commendable reviews.

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3 reviews

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Holley got my build on the track just days after ACE's FI le

5.0

a year ago

Rob L.

Phoenix, AZ

Verified

I made the mistake of installing the Ace's Jackpot in my LS swapped BMW 750Li for a 24 hour race. The Ace's system stopped working altogether before I even got the car on the trailer. After getting the run around from the Ace's "customer service" hotline, I did what I should've done in the first place and purchased the Holley Terminator X Max. Spend the money up front and save the heartache caused by shady companies.

Would Recommend

great system - 5.3 LS Jeep Rubicon

3.0

3 years ago

Hi-Altitude - Low-Attitude

Rocky Mountains USA

5 star system, 3 star price. Holley did not recommend this system on 4WD. Using the VSS on my transfer case adaptor, works great but speed sensing is off while in 4 wheel low. 2003 Jeep Rubicon. we live at 7200' elevation, Jeep trails take us near 14,000'. works up and down the mountains. Pretty easy tune and set up.

Would Recommend

What's not to love its a Holly

4.0

4 years ago

Spoz

Fairborn OH

Verified

1953 Chevy wagon

Would Recommend

Showing 3 of 3 reviews

Questions & Answers

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Fitment

2004-2005 Cadillac CTS

GM LS6

1998-2002 Chevy Camaro

GM LS1

1997-2000 Chevy Corvette

GM LS1

2001-2004 Chevy Corvette

GM LS1
GM LS6

1998-2002 Pontiac Firebird

GM LS1

2004 Pontiac GTO

GM LS1