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Megasquirt Time Based or Trigger Return setting.

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Old 04-21-13, 09:27 PM
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Gen 2 Raced Hard NA 13B

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Time Based or Trigger Return setting.

When should time base be used instead of the trigger return setting in the spark setting area? I am using trigger return with MS1 and see others using time based some times.
Old 04-22-13, 08:58 AM
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Engine, Not Motor

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Time based fires the spark a set time (based on RPM) after the leading edge of the (VR, Hall) trigger is received while trigger return fires it at the falling edge. Trigger return will give you a better signal but I believe support differs based on software.
Old 04-22-13, 11:12 PM
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Gen 2 Raced Hard NA 13B

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Old 04-24-13, 10:17 AM
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You also have to stab your CAS a certain way to use trigger return properly. You have to figure out what angle your return tooth is at, and if it's between -5 and 0 degrees, it should work. Otherwise you should use time-based or restab your CAS so the return tooth is at the correct location.

Ken
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