Bob...
Agreed Examinator is useless..... well maybe for shooting trouble codes. I myself have been very wary of the examinator, as I heard someone lost there tune due to that device, didn't recognize it... etc. etc...
I don't know of anyway to adjust any of the tunes without a key, other than Duane Judge and/or Mike Seastrom putting your ECM's on their programs, which do not require passkey.
But then again I'm far from a computer wizard.... Maybe someone on here has an idea...
Just a thought.... maybe pull the IAC and give a it a good cleaning? I had one out of New Mexico with the same issue.... although I got it figured out on the super X tune eventually... I did monkey around with the IAC, which did help.
Wow.... been a lot of years since then... these 25 years went quickly
Bruce