[Gmecm] Olds 307 injection alive

[Christian E. Carson]

Well, after several months of parts collecting and engine swapping, I've
finally put enough parts together to actually get the 307 in my '90 Custom
Cruiser to start and run with the MPFI Seville intake.  But I still have
several other dilemmas...
I'm using the Moates memcal adapter board with ZIF socket. I tried putting
the PROM into the socket in the orientation the website tells you to (pin 1
facing away from the memcal side) but the ECM will not go into diagnostic
mode or field service mode. When I flip the chip around, it will flash 12
with the engine off, so I figure I'm on the right track.  If the code in the
PROM is corrupted or if it is installed incorrectly, will the ECM flash a
code or simply not function? This is what it seems to be doing, but I'm
boggled as to why it only works in the opposite direction from the "correct"
way.
Is there a time when the fuel pump relay will not be energized for the 2
second period with the key on, like when the PROM is misinstalled? I had to
jump the relay to get it to work, but I didn't test for voltage when I
flipped the PROM around again.

One more question: how close to the fuel tank must an external (Ford truck)
fuel pump be plumbed? The fuel tank is rusty and I've got a 92 fullsized
wagon tank (with internal fuel pump) to go into it, but I've got to drive
the car about 1/2 mile to my house from my barn (where there is no
electricity!) in order to cut the straps and torch the rusty fuel tank bolts
out of there!! (after of course removing the fuel tank! :) ) So I'd rather
hook the pump up to "suck" from the existing low pressure lines but I'm
wondering how quickly it will kill the pump.  Can I use the mechanical pump
to prime the high pressure pump without a surge tank?
Thanks much,
Chris