Haltech E6A - Manual (Page 51)

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5.4 Loading an Ignition Library Map
The E6A has an effective and time saving method of programming the ignition curve using
Library Maps. Each ignition timing Map in the library is slightly different. By becoming familiar
with the library you should be able to select an ignition timing Map that will suit your engine.
Each ignition timing Map in the library is accessed by a different name. The name reflects the
characteristics of the Map. Names can be up to eight alphabetic or numeric characters in
length. The ignition timing library Maps use these eight characters as shown, where the first
character is always a number.
• The first two characters in the ignition timing Map name specify the ignition timing to be
used at idle. The example Map name shown has 15 degrees of advance at idle.
• The third character in the ignition timing Map name specifies the Rpm at which
maximum advance occurs (i.e.. how quickly advance changes with engine speed). This
character is a letter of the alphabet. Option A has full advance in by 1500 Rpm. Option B
has full advance in by 2000 Rpm. Option C at 2500, etc. up to J for 6000 Rpm.
• The fourth and fifth characters in the ignition timing Map name specifies the maximum
advance at atmospheric pressure. Cruise or light load advance is added to this value,
while retard on boost for turbocharged or supercharged engines is subtracted from it.