DIGITAL ECU TUNER 3 – User Manual
Value of the advance angle change is calculated as follows:
IgnAngle = MapValue + CorrMap1Value + CorrMap2Value
If IgnAngle < Maximum Retard then IgnAngle = Maximum Retard
If IgnAngle > Maximum Advace then IgnAngle = Maximum Advace
Positive values on the table correspond to the advancement of the mixture ignition, negative values retarding the
mixture ignition. Depending on a type of a modified signal, which controls the ignition, the range of the advance
angle changes. Therefore, the permitted change for a signal from the toothed wheel is 60-2, +/- 90 degrees.
In case of retarding of the symmetrical signal from the camshaft or crankshaft sensor, a permitted angle equals to
the angle between two consecutive teeth. Therefore, if there is a toothed wheel with four symmetrical teeth on the
crankshaft, the angle between the teeth is 90 degrees and it is the maximal angle of the ignition retard. Ignition
configuration can be done in the Setup/Ignition Configuration menu.
Ignition Mode – choosing the ignition mode, suitable
for the ignition system of the modified vehicle
Ignition input type – choosing the ignition input
mode of working, enables the choice between sensors
(induction or Hall’s),
Maximum RPM – maximal revs on the table’s vertical
axis,
Num signals per 720 – for some of the ignition
systems (for example multitooth), it is required to give
the amount of signals per engine work cycle (720
degrees). An incorrect value will give a wrong read of
the engine’s speed and an incorrect change of the
advance angle acceleration,
Max RPM ever – maximal engine speed registered by
the device,
Reset RPM – resets the counter of maximal engine
speed,
Maximum retard(deg) – value of the maximal retard of the ignition angle,
Maximum advance(deg) – value of the maximal advance of the ignition angle.
Page 19
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