i just found the patent on the flow sensor i had back in the 80's
http://www.freepatentsonline.com/451...o&stemming=off
it failed because the light burned out and the ball dissolved from the unleaded gas. in the drawing it appears more complex than what i remember.
first pic the ZEMCO computer(80's)
i also have the PDF file that i can e-mail.
for any non-ODB MFI, i have a KEL on my truck, from Poland, most $200 in it, just buying one. there is no credit link between here and Poland.
Second pic the KEL economy and trip computer. I have the manual in a word .doc.