Thanks for the reply
I have the Carsoft App that plugs directly into the engine bay DME port, so I'll check that again (I used it to reset the adaptation values). I guess the problem is knowing what all the expected sensor readings are supposed to be at cold temps. But I'll focus a little more and try this again.
I'm going to check the regulator first and then do a smoke test (a suggestion from the other forums since I'm using an SC and carb cleaner checks don't work well in a pressurized system vs. vacuum). You're right about the O2's. Even tho they're old, it doesn't sound like they'd be causing a "cold idle" issue. I have yet to stetho the fuel injectors and pull the plugs, so I'll be doing that too since it's about time (2 years)
I'll keep you posted on the results.