I whole-heartedly believe that if people in here had a half-way descent understanding of how there car [ECU] works....we would all be a little better off.

So without further ado:
http://www.tech2tech.net/training/chpt_01.pdf

Now, the table of contents is listed on the first page of this module so you can get an idea of how many there are. I'm not going to post individual links for each, I'll instead leave it up to you to change the chpt # in the URL bar.

Enjoy fella's.

Now if I can just somehow find scanned versions of the Helms....