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HP EFI

Technical Resources

Holley EFI V4 Software
V4 Overview

DOWNLOAD AND READ THIS FIRST. Includes V4 updates and information

2016 PRI Seminar Example

This is the example calibration that was used during the Holley EFI V4 Advanced Features seminar at PRI 2016.

V4 Revision Log

Contains a list of updates to V4 software and firmware versions

Previous Holley EFI V4 Software and Firmware

Contains all previous V4 software versions (Build 30 and 32) in a zipped file. Compatible firmware is included in the software installer.

Holley V4 Software and Firmware

Contains latest V4 software (software version 4.0 Build 110). The compatible firmware (firmware version 4.0 Build 110) is included in the software installation. Changes include updates to run Holley EFI Coyote VVT Module, Drive-By-Wire updates, and other items. For specifics, the V4 Revision log.

Holley EFI V3 Software
V3 Software Overview

DOWNLOAD AND READ THIS FIRST. Includes V3 updates and information. V3 is updates are not needed for most users.

Holley V3 Software

Contains latest V3 software

Holley V3 Firmware

Contains latest V3 firmware

Holley EFI V2 Software
Holley EFI V2 Instructions

IMPORTANT DOWNLOAD - These contain new instructions for V2 Installation, Features, Boost Control, and Traction Control

V2 Update Instructions

DOWNLOAD AND READ THIS FIRST- Follow these steps EXACTLY to update your Holley EFI system to the new V2 version.

Holley V2 Software

Contains latest V2 software.

Holley V2 Firmware

Contains latest V2 firmware.

Holley V2 Firmware Changes

Contains a list of updates to V2 firmware versions.

Previous Software Version/Updates
Holley EFI Firmware

FINAL PRE-V2 FIRMWARE - Firmware must be installed with tuning software version 1.1.5 Build 3 located above. Read the "note" in the Holley EFI Firmware Changes document before performing firmware update.

Holley EFI Firmware Changes

Change log for pre-V2 firmware versions

Holley EFI Touch Screen Update

It is recommended that all Touch Screen users that purchased a Holley EFI touch screen before June 2011, and experience a battery drain over 2-3 weeks, install this update. Download these instructions.

Holley EFI ReloadPM Installer

It is recommended that all Touch Screen users that purchased a Holley EFI touch screen before June 2011, and experience a battery drain over 2-3 weeks, install this update. See "Touch Screen Update" instructions.

Holley EFI Software

V1.5.0.3. This is the last version of software before the V2 update. Do not update if your current software is 1.3. Contact Holley tech at 270-781-9741 if you have version 1.3.


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