C20XE ref/sync mode

[mikemph]

Hi

Can some help with what mode to use on a GM C20XE sequential

60-2 trigger mag sensor
1 tooth sync hall sensor in dissy
CRIP 114

Think it should be 73? is this correct or have I miss understood?

[MarkMc]

70 something anyway, it depends on the edges that need to be used, especially for the crank trigger. You really need an osciloscope to get it right with an M4/M48.

[lonestarrpm]

I had an o-scope when I was debugging my setup -- unfortunately
while it was good enough to look at the waveform -- it was horrible
for determining alignment. So I experimented.

I'm not 100% sure but I think the difference between the
71,72,73,74 or any of the #[1234] nomenclature is the
expectation of the relationship between the ref and sync.

for example the combination maybe (I have not verified)
#1 rise, rise
#2 rise, fall
#3 fall, rise
#4 fall, fall

So -- I was able to fiddle with the settings and observe the sync % to sort of figure things out.

Not the best way -- but if you are equipment challenged it just might work for you.

Mike