Honestly, everything I've learned has been through trial and error. I'm just one of those fortunate people that just seem to grasp tuning.
I know SCT has a really good book on Gas Tuning written by Chris Johnson, Jerry Wroblewski, and a couple other guys. I don't know if they really offer anything for the diesels, but you might ask.
As for PCM design, I don't know what to tell you there. There really isn't much information available since much of it is proprietary.
I will offer you this from Tom Cloud's school website:
http://www.austincc.edu/cloud/tc_auto.html
Pay particular attention to the page on EEC-IV Fuel Injection and especially to this one document, which is a breakdown of the Ford EEC-IV Processor:
EECTech98.pdf
Really good stuff and was a basis for a lot of what I learned on the electronics end of things. Hope you've got a couple days with nothing to do!
Enjoy.
__________________
Bill Cohron - The Mad Doctor
Power Hungry Performance - The
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