Update: Got an email back from Bryce at Fitech.. May be my problem.
"The wiring that I have seen cause random RPM at key on is the oxygen sensor. If you disconnect it and key on will RPM stop bouncing? We have a way to stop this in the software."
I have emailed back asking if the software is something I can implement. I"ll report back after I test this by unplugging the O2 harness, and turning key on, later this afternoon. If true, it looks like the O2 wiring harness needs to be shielded, and mine runs right beside my distributor pick up line.
Fingers crossed!!
Ken
