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Air and Fuel› Fuel Injection Systems and Components - Electronic

Holley

Terminator X ECU

$979.95 $844.82 Save $135.13

SKU: HLY-554-152

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Overview

The Holley 554-152 Terminator X ECU is an engine control module designed for street performance applications. It features real-time fuel learn capabilities, high-impedance injector drivers, and an integrated 1-bar MAP sensor. This unit also includes 4 programmable inputs and outputs to enhance its functionality.
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The Holley 554-152 Terminator X ECU Service Unit is engineered for advanced street performance, offering comprehensive engine management. This unit is equipped with real-time fuel learn functionality, allowing for dynamic adjustments to optimize fuel delivery under varying conditions. It also features high-impedance injector drivers, which are crucial for precise fuel atomization and efficient combustion. Key technical specifications include an integrated 1-bar MAP sensor for accurate manifold pressure readings and four programmable inputs and outputs. These I/O capabilities provide flexibility for integrating additional sensors, controlling accessories, or implementing custom tuning strategies. The ECU is provided as a service unit, implying it is the core control module. This particular service unit comes with the wiring harness and MAP sensor included, simplifying the installation process for users. It is designed as a direct replacement or upgrade for existing engine control systems, offering enhanced performance and tuning potential for a wide range of applications.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandHolley
Part NumberHLY-554-152
CategoryAir and Fuel

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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