Holley manual .pdf
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ELECTRONICS AND FUEL INJECTION
NOTE: These instructions must be read and fully understood before beginning
installation. If this manual is not fully understood, installation should not
be attempted. Failure to follow these instructions may result in
subsequent system failure.
Copyright © 2009 by Holley Performance Products, Inc.
Any unauthorized reproduction of this manual without the express written
permission of Holley Performance Products, Inc. is strictly prohibited.
Welcome to a brand new era in fuel injection! Introducing the new Holley HP and Dominator EFI systems!
Holley is now your one-stop-shop for EFI. From street easy to full race – these new systems cover everything from
simple throttle body systems, all the way to the latest twin turbo or nitrous outlaw engines. Want to run an LSx
engine with drive-by-wire and an electronic transmission. Holley has you covered!
Advanced technology and innovative solutions allowed Holley to develop these new user-friendly yet sophisticated
ECU packages. Breakthrough features like self-tuning strategies, hand-held programmers, and striking touch
screens bring Holley to the forefront of the EFI market. Combine that with appealing pricing and now it’s easier than
ever to own EFI. It’s Tomorrow’s Fuel Injection Today!
Thank you for your purchase of the Holley Dominator or HP EFI Fuel Injection System. This tuning manual is
specifically intended for people that have little experience tuning aftermarket fuel injection, or anyone that wants very
detailed step-by-step instructions to setup and tune their EFI system.
NOTE: We highly recommend that you carefully read through all the manuals included with your system before
installing and tuning your Dominator or HP EFI Fuel Injection System. This will eliminate many problem areas and
wasted time. This specific manual covers only the setup and fuel, ignition, and idle tuning aspects of the Dominator
or HP EFI. Wiring information is contained under the “Wiring” portion of the Index. The nitrous, water methanol
injection, drive by wire, transmission control, custom I/O, and boost control, are covered in the “Tuning” portion of the
Also note that the “HELP ?” feature of the instructions allows the user to obtain information about any
single parameter anywhere in the software. To use the feature, simply click once on the “HELP ?” at the
top of the screen, move the cursor to the parameter in question, and click once. This will display
information specific to that parameter
2.0 SKILL LEVEL REQUIRED
Installation of the Holley HP or Dominator intake systems and ECU’s require approximately the same level of skill
and experience to replace or service an induction system consisting of a carburetor and conventional intake
manifold. Basic, but sound wiring skills and practices are required to perform the main wiring harness installation.
Poor wiring and wiring practices WILL lead to issues with the system. When wiring up extra inputs and outputs,
thorough understanding IS required to properly wire up extra sensors and other inputs and outputs. If you are unsure
of your skill level, it is recommended to take it to a professional.
Tuning of the basic fuel and spark portions of the system requires basic computer skills and a basic knowledge of
engine and fuel injection principles. Certain advanced tuning features, ignition setups, as well as tuning nitrous oxide,
water methanol injection, and boost control require a knowledgeable person or professional tuner. Lack of
understanding of these areas can result in significant engine damage. Read the various manuals and thoroughly
understand all portions of this system before performing any tuning.
Installation of the actual EFI system hardware is included in hardware installation manuals with each kit.
Tuning your EFI system is an ongoing project, until you get it dialed in for all conditions. Be patient.
NOTICE: If you are not absolutely certain that you have the skills and experience required to perform these
procedures, we strongly recommend you have this system installed by a professional specializing
in EFI and fuel systems installation and tuning.
3.0 SOFTWARE INSTALLATION, SOFTWARE OPERATIONAL
DESCRIPTION, COMPUTER OPERATION, & FUEL MAP
A Windows compatible laptop computer (or PC for initial setup) is required for use with Holley
HP/Dominator software. The computer must be capable of running Windows XP, Vista, or Windows 7.
The laptop must also have a graphics resolution of at least 1024 x 768 to view all areas of the screen
(although a higher resolution will reduce the need to scroll in some screens). Communications are via a
USB communications port.
3.1 Software Installation
3.1.1 Windows XP, Vista, or Windows 7
Holley EFI software is designed to run on Windows XP, Vista, or Windows 7 operating systems.
1. Insert the CD Rom (included with the ECU) into the CD drive of your laptop. The CD should run
automatically. If it does not go to “Start” and “Run” and select “Browse”. Select the CD drive the
install disk is located on and search and select the setup executable file.
2. Follow on screen prompts to load the software.
3. Once the software is installed, a Holley EFI icon (below) should appear on the main computer
screen. When you double-click on this icon, the software should open. You will see a main menu.
Click “Cancel” at the bottom for now. If you are running Windows Vista or Windows 7, you need the
software setup such that you are the “administrator”. If you have any problems opening the
software or otherwise, you must perform the following steps:
Select the “Start” button
Select “Computer” and select drive “C”.
Select “Program Files” or “Program Files (x86)”
Select “Holley” and then select “EFT”
Right click your mouse on “Holley.exe”
Select “Run as Administrator” and the software should run properly.
3.2 Basic Computer Operation
Once the software is installed, a Holley EFI icon should appear on the main computer screen. When you
double-click on this icon, the software should start. There is a USB communications cable that needs to
be hooked up to the ECU (it connects directly into the ECU USB port) for you to program and view data
in the ECU. This cable needs to be plugged into any USB port on the laptop computer.
3.3 Software Operation and Navigation
The Holley HP and Dominator EFI software offers many unique features that set it apart from other
products. Some of these features are designed for experienced tuners and shops that tune many
applications and desire to create a database of base calibrations.
3.3.1 Basic Operation
File Structure Overview – One of the main differences of this EFI system is that the “Calibration” or
“Map” is not a typical single file, but is actually stored within a standard Windows “Folder”. This folder
is called a Global Folder. The term Global Folder (abbreviated GF) will be used throughout this manual.
It is synonymous with the typical terms such as “Map”, “Base Map” and others. This folder contains
multiple files that make up the “Base Calibration”. These individual files are called Individual
Configuration Files (abbreviated ICF).
GLOBAL FOLDER (GF) – The “base calibration” or “map”. This is a standard Windows “folder”.
INDIVIDUAL CONFIGURATION FILES (ICF) – Individual files contained with the Global Folder that make
up the “base calibration”.
This method offers a lot of advantages. When a new base calibration is created, it allows the user to
select from a library of individual files for each portion, to create a base calibration that is unique and
specific to that application. When a new calibration is completed, a file can be “disassembled” and
imported back into the library.
Individual Configuration Files – As discussed above, various ICF’s make up the complete calibration, or
Global Folder. There are five ICF’s that are required for every application. These are:
1) Fuel – Tuning of all fueling parameters.
2) Spark – Tuning of all ignition timing parameters.
3) System – Defines operational parameters and more.
4) Sensor – Defines and allows customization of the standard sensors.
5) Idle – All programming parameters related to idle.
There are several more powerful ICF’s that are optional:
1) Nitrous - Allows up to 4 stages of progressive nitrous control, as well as allowing wet or dry.
2) Boost – Allows for 4 methods of boost control, as well as a staging boost builder function.
3) Water/Meth – Fully programmable water/methanol injection.
4) Input/Output – Allows a user to create any input and output functionality they desire.
5) Drive-by-Wire (only on Dominator ECU) – Allows for the operation of single or dual drive-bywire throttle bodies.
6) Transmission (only on Dominator ECU) – Controls OEM electronic transmissions.
Communication Modes – The ECU and laptop communicate with each other via a standard USB cable.
The system is designed so that checks and balances are performed so that the PC and ECU data are
always in sync with each other. It won’t allow for ECU and PC data to be mixed or corrupted. There are
three “Communications Modes” that can occur between the ECU and the Laptop. This mode is shown
at the top of the screen between the “Toolbox” and “Help” options.
The following are the three communication modes that can be indicated:
1. Offline – Is shown when the ECU is not powered or the USB cable is not connected.
2. USB Link – Is shown when the ECU is powered and USB connectivity is established (USB cable
plugged in). However, the user has not chosen to select the “online” mode and the Laptop and
ECU are not communicating with each other. Changes made at this time on the laptop, are not
being updated in the ECU. Vehicle ignition power does not have to be turned on to indicate
3. Online – Is shown when the Laptop and ECU are communicating. Vehicle ignition power must
be on in order to enter Online mode. At this point changes made with the laptop are real-time
updated in the ECU. To enter “Online” mode, simply depress the “USB Link” button with the
cursor. At this time, the software checks the data on the laptop (if any is opened) and the data
in the ECU. If they are different, the user is given the choice to retrieve the ECU data, or send
the PC data to the ECU. Once synchronized, the ECU can be real-time programmed by the
laptop while online mode is enabled.
Editing Online/What is and is Not Real-Time Programmable – All “tuning” parameters are editable,
real-time in online mode. Certain “configuration” parameters are not editable when on-line. Examples
are the Sensor ICF and the Engine and Ignition Parameters section. If an area is not editable on-line, it
will be grayed out and will not be editable.
IMPORTANT: In addition to this, many of these grayed out parameters are “initialized” when the ignition
key is first turned on. This means that after these parameters are changed (or a new
Global Folder is sent with new parameters), the ignition key must be cycled. So, after any
of these parameters are changed, OR a new global folder is sent where any of these
parameters are different, simply shut the ignition power off, and turn it back on.
3.3.2 Creating an Initial Calibration
There are three ways to create an initial calibration. These are:
Download one of the base Global Folders that is included in the software. This is the easiest method
for a beginner that has purchased a complete Holley EFI system.
Create a new Global Folder from base Individual Configuration Files. This is typically desirable when
an application “has a lot of features” such as Nitrous, Transmission Control, etc.
This is a combination of the first two. First download a base Global Folder, then add the necessary
additional Individual Configuration Files (such as Nitrous, etc.) using the “Toolbox” feature.
These are described below. These choices will also come up when the software first opens from a main
1. Downloading a Base Global Folder
There are many base calibrations provided with the software. To download one of these base
Go to “File”
Select “Open Global Folder”
Select a Global Folder to start with. Note that you will select a Directory, not a standard file
(This may require following the directory tree). A list of base calibration files can be found under
the help section and “Base Calibrations”.
The file will now be loaded on the laptop/PC
2. Creating a New Global Folder
A base Global Folder can be created from compiling ICF’s. To do so, perform the following:
Go to “File”
Select “Create New Global Folder
Select a “Fuel” calibration.
NOTE: Make sure the “Files of Type” at the bottom show (*.fuel) files. Make sure that when other ICF
files are selected, the proper extension is shown at the bottom. This should occur
automatically. If not, manually select the proper file type.
Select a “Sensor” calibration. Select “Open”.
Select an “Idle” calibration. Select “Open”.
Select a “System” calibration. Select “Open”.
Select a “Spark” calibration. Select “Open”.
Save the new calibration by going to “File” and selecting “Save Global Folder As”.
10. Type in the Global Folder name you want to save the calibration as at the bottom of the window
and select “Save”. You can also create a new directory path string as well, if you plan on
creating many Global Folders.
3. Using a Base Global Folder and Adding ICF’s
1. Perform all steps above for “Creating a New Global Folder”.
2. On the top of the toolbar select “Toolbox” and “Add Individual Config”.
3. Select the “Look In” dropdown at the top and select the “Individual Configuration Library”
4. Select the ICF directory for the feature you want to add (Nitrous, Transmission, etc.) and select
5. At the bottom of the window, select the appropriate file extension under “Files of Type” as
Select the ICF file desired and select “Open”.
The ICF is now loaded with a base calibration for it as well. Review all the parameters before