[Gmecm] a question of timing

[Don Brown]

Thanks very much for the comments.  These have really helped me understand 
the difference between what's needed and and what I had planned to do to 
solve the ignition issues.

Don
67 buick gs400
455
tpi
dis - hpv1
----- Original Message ----- 
From: "Andrew Gibson" <andrewsharyn at yahoo.com>
To: <gmecm at diy-efi.org>
Sent: Monday, March 13, 2006 10:01 PM
Subject: Re: [Gmecm] a question of timing


Yes Mike, the high voltage of the reference is 5V. What David is talking 
about on the ground is a floating ground. The ecm and module hold the ground 
above chassis ground to prevent noise interference. The floating ground 
depending on the system is between .1 and 1 volt. In my experience gm is 
usually around .2V

  Sounds like an interesting conversion!


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