[Gmecm] re dual4cyldis modulefor v8 use

[Peter Jenkins]

have put diagrams at 
http://www.diy-efi.org/twiki/bin/view.pl/Gmecm/Running2DisPacksOff1Ecu
and some more discussion on the gm forum at 
http://gmecm.mine.nu/viewtopic.php?p=207#207
on the test bench I have two crank angle sensors at 60deg (or could be put 
at 180deg) the  sensors are connected to the dis module only and are 
independent of the ecu, and give the dis modules the base timing and their 
firing order . If I join the est output and the bypass control on both coil 
they packs they fire together . disconnected one runs at base timing while 
the other is est controlled
the problem with est output is the square wave is not symmetrical not only 
does it increase in frequency but also varies in duration so this rules out 
using the down slope to fire second module.
hence the idea to double the signal and then split it to alternate outputs.
the original signal is timed correctly all you are doing is putting another 
in the middle and bleeding it off to the second dis module hence it is timed 
at 180deg
phase with all the original characteristics
> Peter Jenkins
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