Haltech E6X Manual DOS Version - Manual (Page 63)

E6X Manual
63
This only identifies the map being edited, not the map being accessed by the ECU to run the
engine.
The active editing map can also be selected through the Dual Map set-up page.
5.5 Ignition Quick-Map
Often when mapping ignition it is simpler to start with a basic ignition profile which takes
into account the basic ignition requirements with respect to engine speed and load. The ECU
programming software has a feature called the Ignition Quick-map which allows the user to
profile a map quickly to speed the ignition tuning process.
The ignition timing library Maps use these eight characters as shown below. 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 specify the
maximum advance at atmospheric pressure in the inlet manifold. Cruise or
light load advance is added to this value, while retard on boost for
turbocharged or supercharged engines is subtracted from it.
- The sixth character in the ignition timing map name specifies the extra
ignition advance to use at light loads such as highway cruise. This is
equivalent to the vacuum advance on a distributor. If this character is A,
there is no extra advance under light load. Each successive letter of the