Holley EFI Terminator X MPFI Standalone ECU Kit — Fits GM LS1/LS6 24x Engines

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SKU: GVMR_550-903T
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Sale price$1,258.95 Regular price$1,399.95
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Holley EFI

Holley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Unlock Maximum Power with Holley EFI Terminator X

Take full control of your GM LS-series engine with the Holley EFI Terminator X MPFI Standalone ECU system. Designed specifically for LS1 and LS6 engines equipped with a 24x reluctor wheel, this kit replaces your factory computer to provide advanced tuning capabilities, improved throttle response, and reliable performance in any driving condition.

Key Features and Benefits

  • Plug-and-Play Integration: Includes a comprehensive wiring harness for a straightforward installation on GM LS applications.
  • Advanced Tuning: Features a high-speed processor that allows for real-time adjustments to fuel, spark, and sensor inputs.
  • 24x Reluctor Compatibility: Specifically engineered to work seamlessly with factory 24x crank triggers.
  • Data Logging: Built-in data logging capabilities help you monitor engine health and optimize your tune for the track or street.

The Terminator X system is the ultimate solution for enthusiasts looking to modernize their LS build. Whether you are running a stock engine or a modified setup, this ECU provides the flexibility to grow with your project. Its intuitive software interface makes it easy to dial in your air-fuel ratios and ignition timing for maximum horsepower and torque. Experience the precision engineering of Holley EFI components today at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Holley EFI

Holley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Unlock Maximum Power with Holley EFI Terminator X

Take full control of your GM LS-series engine with the Holley EFI Terminator X MPFI Standalone ECU system. Designed specifically for LS1 and LS6 engines equipped with a 24x reluctor wheel, this kit replaces your factory computer to provide advanced tuning capabilities, improved throttle response, and reliable performance in any driving condition.

Key Features and Benefits

  • Plug-and-Play Integration: Includes a comprehensive wiring harness for a straightforward installation on GM LS applications.
  • Advanced Tuning: Features a high-speed processor that allows for real-time adjustments to fuel, spark, and sensor inputs.
  • 24x Reluctor Compatibility: Specifically engineered to work seamlessly with factory 24x crank triggers.
  • Data Logging: Built-in data logging capabilities help you monitor engine health and optimize your tune for the track or street.

The Terminator X system is the ultimate solution for enthusiasts looking to modernize their LS build. Whether you are running a stock engine or a modified setup, this ECU provides the flexibility to grow with your project. Its intuitive software interface makes it easy to dial in your air-fuel ratios and ignition timing for maximum horsepower and torque. Experience the precision engineering of Holley EFI components today at GGCRACING.

Product Details

Product Description

About Holley EFI

Holley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Unlock Maximum Power with Holley EFI Terminator X

Take full control of your GM LS-series engine with the Holley EFI Terminator X MPFI Standalone ECU system. Designed specifically for LS1 and LS6 engines equipped with a 24x reluctor wheel, this kit replaces your factory computer to provide advanced tuning capabilities, improved throttle response, and reliable performance in any driving condition.

Key Features and Benefits

  • Plug-and-Play Integration: Includes a comprehensive wiring harness for a straightforward installation on GM LS applications.
  • Advanced Tuning: Features a high-speed processor that allows for real-time adjustments to fuel, spark, and sensor inputs.
  • 24x Reluctor Compatibility: Specifically engineered to work seamlessly with factory 24x crank triggers.
  • Data Logging: Built-in data logging capabilities help you monitor engine health and optimize your tune for the track or street.

The Terminator X system is the ultimate solution for enthusiasts looking to modernize their LS build. Whether you are running a stock engine or a modified setup, this ECU provides the flexibility to grow with your project. Its intuitive software interface makes it easy to dial in your air-fuel ratios and ignition timing for maximum horsepower and torque. Experience the precision engineering of Holley EFI components today at GGCRACING.

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