Haltech IG5 - Manual (Page 26)

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CHAPTER 3 ENGINE IDENTIFICATION
3.1 Setting Engine Identification
The Identification page tells the IG5 information about the engine characteristics. Without
this information being correct the engine cannot run properly. The Identification is made up
of several fields. Each field can have a number of settings, and you can change most of the
fields.
Use the Up and Down arrow keys (
′′′′
and
≤≤≤≤
) to move between fields. The fields are either
Selection type, or Text type. The Selection type fields give you a number of valid entries for
that field. For example, the valid number of cylinders can be set to 1, 2, 3, 4, 5, 6, 8, 10 or 12.
The Tab and Enter keys (
♥ ♥ ♥ ♥
and
← ← ← ←
) keys are used to change this type of field. Each stroke of
the Tab key will display the next selection. The Shift and Tab keys together will step
backwards through the selections. Once the desired selection is displayed, the Enter key is
pressed to program that selection. Text Fields require you to enter either text or numbers.
Once the field is selected, the new text can be typed in, with the Enter key to finish. An
example is the Rev Limit. This field can be set between 2000 and 16000 rpm. If you want the
rev limit to occur at 7000rpm, then you would need to select this field using
′′′′
or
≤≤≤≤
and then
type
7000← 7000← 7000← 7000←
.
Here is a description of each of the Identification fields:
Cylinders
The number of engine cylinders needs to be entered here. This parameter is used to
determine the engine speed.
Load Sensing
The IG5 can use either the manifold pressure or the throttle position as a means of
determining the engine load. Most engines operate using manifold pressure to sense
engine load. If your engine employs any form of supercharging, you must run in
manifold pressure mode. Only wild cams, motorbikes or heavily ported rotaries
require throttle mode – i.e. engines whose vacuum signal is small, or fluctuates
greatly. If you are unsure what to use, contact your Haltech dealer.
MAP Sensor
The IG5 needs to know the pressure range of Manifold Absolute Pressure (MAP)
sensor being used. Refer to Chapter 1 [1.3.1]. The selected value can be 1, 2 or 3bars.
RPM Limit
The IG5 can limit the maximum rpm at which the engine will operate. Above this
level the IG5 completely cuts ignition to the engine. When the engine speed drops
below the RPM Limit the IG5 will resume normal ignition delivery. This is known as
hard limiting. If the RPM Limit is not wanted then set this value above the highest
operating point of the engine.