Haltech IG5 - Manual (Page 32)

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Range 3 Bar 13
This information refers to the instantaneous engine speed and load and will follow any
changes in these values.
°Advance
This is the vertical axis of the ignition maps and indicates the advance selected for the
relevant engine speed and load.
-100 to 100 kPa
This is the horizontal axis of the ignition maps and indicates load range at the current
engine speed (defined by Range X). This particular map is used in conjunction with a
turbo-charged engine operating up to 1 bar of boost.
Highlighted bar
In the example above this is the bar above 0 kPa. It is the bar that will be altered in
height if the up or down arrows are pressed (see next section).
Arrow above bar
If the displayed map is in the same speed range as that at which the engine is actually
running, an inverted triangle will display above the vertical bar corresponding to the
actual load point of the engine. This is very useful when running an engine on a dyno
and you want to see what effect a change in ignition advance will have. The current
map can be accessed through the Ignition Map selection display by pressing the Home
key.
4.6 Altering a Map
Note: When two keys are displayed together, such as
ƒξ ƒξ ƒξ ƒξ
, this means that the
second key must be pressed while the first key is held down. In this case, the
ƒƒƒƒ
key would be held down while the
ξξξξ
key is pressed.
The height of the Bars in the map can be adjusted by using the up and down arrow keys for
small changes of the PgUp and PgDn keys (
≥≥≥≥ ЧЧЧЧ
) for larger increments. See the command
summary at the end of this section for a full list of key functions. The bar that is highlighted
on the computer screen indicates the bar that you are adjusting. To select a different bar, use
the left and right arrow keys (
∞ ∞ ∞ ∞ ⁄⁄⁄⁄
). The ignition advance for the outlined bar is shown at the
bottom of the display.
The ignition advance displayed does not necessarily match the bar height shown on the on
the map rather it is the final ignition advance after the various corrections have been made.
The ignition advance displayed in the engine data is indicated by the arrow above the
applicable bar, this is not necessarily the highlighted bar.
Changes made take effect the instant the keys are pressed. You do not have to do anything
else to save these changes.