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Air and Fuel› Fuel Injection Systems and Components - Electronic

Holley

EFI Base Kit with 3.5" Touchscreen LCD

$1,687.95 $1,551.95 Save $136.00

SKU: HLY-550-936

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INSTALL DIFFICULTY
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Advanced — 4+ hours

Overview

It features real-time fuel learn, high impedance injector drivers, and an integrated 1-bar MAP sensor. The kit includes 4 programmable inputs and outputs, suitable for applications like electric fans, boost control solenoids, and nitrous control. It comes with base maps for common V8 engine combinations and a 3.5" touchscreen LCD handheld for calibration, tuning, and gauge display.
Show original supplier description
The Holley EFI Terminator X Universal MPFI Kit offers comprehensive engine management for Domestic V8 engines at a budget-friendly price. This system provides complete control over your engine, self-learning fuel strategies, and the proven technology of Holley EFI. It features real-time fuel learning, high-impedance injector drivers capable of powering most stock and Holley EFI injectors (will not control low impedance injectors), and an integrated 1-bar MAP sensor. For boosted applications, the internal MAP sensor can be disabled to utilize an external sensor. This kit is equipped with 4 programmable inputs (12v, Ground, 5v, Frequency) that are ideal for controlling electric fans, boost control solenoids, progressive nitrous control, trans brakes, and activating additional sensors. It also offers advanced boost control features (Boost vs Time, Gear, RPM, Speed, Safeties) and single-channel nitrous control (Wet or Dry, Progressive or Non-Progressive) with rich/lean safeties and target AFR. The system supports advanced tables for custom tuning, including Flex Fuel Sensor Offset and custom fuel or oil pressure safeties. On-board diagnostic LEDs for ECU Power, Engine Run, Wideband Status, TPS Calibration, Crank Signal, and Cam Signal allow for quick identification of critical engine issues. The included 3.5" touchscreen handheld features an easy-to-use calibration wizard for quickly building a base tune for any domestic V8 engine. It also provides internal data logging capabilities and a fully customizable gauge display. The compact ECU can be mounted almost anywhere, with the diagnostic LEDs needing to face upwards. The Terminator X system is plug-and-play compatible with various Holley EFI accessories, including analog gauges, shift lights, and other modules, with future support for 12.3" digital dashes planned. Holley provides free EFI tuning software for advanced users to gain complete control of their power plant. The kit includes an EV1 injector harness and is compatible with Dual Sync and HyperSpark Distributors (adapter 558-323 required for HyperSpark Distributors).

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-550-936
CategoryAir and Fuel

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