Haltech IG5 - Manual (Page 5)

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Introduction
Congratulations on your decision to install a Haltech Ignition System to your vehicle. Haltech
systems have been successfully installed on thousands of vehicles, from power off-shore boats
to twin-turbo Ferraris, from pylon racing aircraft to jet skis and snowmobiles. Over the past
several years, many motor sport enthusiasts have discovered that the Haltech computer is easy
to use and gets the job done correctly - that job being to reliably make a lot of horsepower and
torque in an engine by enabling users to precisely control ignition timing. Precise ignition
control also leads to excellent drivability and fuel economy - something that is often lacking
in high-performance engines.
Haltech users have discovered that the flexibility of the Haltech Electronic Control Unit
(ECU) and PC based programming software leads to the easiest possible installation on
everything from traditional pushrod V8s to high performance turbocharged racing
motorcycles. We are proud of the fact that some of the most respected professional racers and
supercar builders in the world use Haltech equipment for the same reasons that Haltech is
popular with motor sports enthusiasts: it is flexible and friendly, is installed easily and you can
tune your Haltech simply, without having to make the project a major research effort.
Installation Overview
The Haltech IG5 system utilises a special-purpose programmable microcomputer designed for
engine management. The IG5 system includes the ECU, engine sensors, and a special wiring
harness to connect them, plus programming software and cable for tuning the system.
Installation requires the mounting of four electronic engine sensors; two for temperature, one
for throttle position and one to sense intake manifold pressure. A harness is supplied for
connecting the 12V, ground and signal wires, and plugs to the engine sensors. An igniter will
be mounted in the engine bay and connected to the harness or the original igniter may be used.
Finally the ECU is mounted. The ECU requires a trigger with a fixed timing relationship to
the engine crankshaft from a distributor, crank angle sensor, or cam angle sensor. If you
vehicle lacks one or more of these components, your Haltech dealer can help you obtain them.
When component installation is completed an IBM compatible PC is connected to the ECU
via the supplied communications cable. The Haltech Programming software then allows you
to configure the IG5 to your engine requirements. The programming software has been
designed to be functional, "friendly" and intuitively easy to use.
For initial engine start up the ECU has a quick map feature This feature which is discussed in
more detail later in the manual offers you a simple and effective way of forming an ignition
curve as a starting point. Once the motor is running, fine-tuning to develop maximum
performance can be easily accomplished through the Haltech software.