more details sbc in place of lt1

[Shannen Durphey]

Bruce Plecan wrote:
>
> Well the lenghts of signals on the lo res vary, andyou have too sync that to
> crank posistion.  The PLL would be for when actually running as I see, it
> sense the rpm are so erratic at cranking.
> Grumpy

I've watched the high and low res signals with an O'scope.  I think
they are pretty erratic at idle, too.  I've seen low res signals cause
ignition misses, idle flare up, poor low speed driveability.  
Bad, bad thing that optispark....

Hmmph.  I've got another one to change tomorrow.
Shannen
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