60
Crank Retard helps to compensate for Magnet to Hall sensor delay time and the engine slowing down
while coming up on the compression stroke, so having a value of between 10 and 30 here can help
prevent engine kickback during cranking. If the engine kicks backward during cranking the increase this
value. Default is 20. Also you want to have a low timing amount in RPM Ignition 500 of 10 or less.
Magnet Position
Initial Setup - VERY IMPORTANT
Lycoming engines using the SDS CNC Hall sensor mount can skip this step. FYI, Lycoming default
values here for Dual ECU Primary is 97 and Backup 88. Lycoming with single Hall sensor default is 92.
Magnet Position, all Other engines non-Lycoming please follow this procedure.
This step requires a timing light. The best timing light to use, is one that does not have a delay knob.
Delay lights may not work properly with waste spark ignitions. If you only have a delay type light set the
delay to 0. The flywheel/ timing disc and block must have timing marks on them. The timing light
inductive pickup clamp can also be connected onto the ground wire of the coil pack unit if clipping to the
spark plug wires does not work well.
This involves calling up the MAGNET POSITION parameter using the programmer. This step should be
performed as soon as the engine is fired up and idling. Ignition timing is meaningless without
first setting the MAGNET POSITION parameter properly.
A value of between 70 and 90 entered should allow the engine to be started. 80 would be a good starting
point and is where the system is factory set.
STEP 1. Using the Programmer set the following parameters:
RPM IGNITION 500 to a value of 10.
RPM IGNITION 750 to a value of 10.
RPM IGNITION 1000 to a value of 10.
RPM IGNITION 1100 to a value of 10.
RPM IGNITION 1200 to a value of 10.
STEP 2. Make sure that all IGN RET-ADV/LOAD values below boost are 0.
STEP 3. Start the engine and keep it running around 1000 rpm.
STEP 4. Connect a timing light.
STEP 5. Change the MAGNET POSITION value until the timing light reads 10 degrees BTDC.
Once the MAGNET POSITION is set, it does not have to be changed again- it is only to tell the ECU
what the "distance" between the #1 MAGNET and Hall sensor is. Once the above 5 steps are completed,
you can program any of the ignition values.
MAGNET POSITION may need to be adjusted if the Hall sensor is removed for engine repairs if you
have the adjustable type. After it is installed again, the above procedure should be completed again so
the ignition timing is the same as before.
SERIOUS ENGINE DAMAGE CAN OCCUR with improper values entered. Excessively retarded
timing can cause high exhaust gas temperatures while advanced timing can lead to pre-ignition and
detonation. Default values may not be correct for your engine!
RPM IGNITION
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