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XDI200 Manual Version 0.1
- Page 21 -
©2017 Electromotive, Inc.
entering a value for the “Change DFU “A” Trigger Wheel TDC” that is MORE than 11. Each tooth
more that 11 represents 6 degrees of retard that is subtracted from the Ignition Advance Table.
If an odd-fire engin
e has the trigger wheel installed incorrectly, and the DFU “A” TDC
parameter is changed to compensate for the error, the “DFU “B” Trigger Wheel TDC” parameter
needs to be manipulated in the same amount. As an example, if the TDC for DFU “A” is at 11
and i
s moved to 10, the TDC for DFU “B” would need to be moved from 16 to 15.
The following pages outline the various situations that can be addressed through the TDC
software parameters.
Situation A
Problem:
Incorrect trigger wheel alignment results in undesired mechanical timing.
Solution:
With the engine at TDC #1, find the trigger wheel tooth that is aligned with the crank sensor.
Enter the number of this tooth into the TDC Tooth Alignment Parameter. The timing will be
shifted to make the Ignition Advance Table accurate.
Method:
The software will automatically RETARD the timing when a number GREATER THAN 11 is
entered into the TDC Tooth Alignment Parameter. The timing will be automatically ADVANCED
when a number LESS THAN 11 is entered.
Situation B
Problem:
The engine needs less mechanical advance, and the crank sensor is aligned with the 11
th
tooth.
Solution:
Enter in the number “12” to the TDC Tooth Alignment Parameter. The timing values will be
automatically RETARDED by 6 degrees. The Ignition Advance Table values will now be incorrect
(the displayed values will be 6 degrees higher than the actual advance).
Situation C
Problem:
The engine needs more mechanical advance, and the crank sensor is aligned with the 12
th
tooth
instead of the 11
th
.
Solution:
Enter in the number “11” to the TDC Tooth Alignment Parameter. The timing values will be
automatically ADVANCED by 6 degrees. The Ignition Advance Table values will now be incorrect
(the displayed values will be 6 degrees lower than the actual advance).
Note:
In the past, aligning the sensor with the 12
th
tooth would advance the mechanical timing by 6
degrees.
