Ok so just to remind you guys I have the Sniper EFI installed and the billet dist. My timing and idle speed ( and everything else) is controlled by the computer. I have the ability to adjust the timing on the fly using the handheld display inside the car. Meaning, while I was sitting in that parking lot yesterday I was able try one advance setting for awhile till the temp settled in and then change the timing and sit for a few minutes to see what that did to the temps. I even was screwing around with the timing while I was driving home on the freeway. When the timing is reset the idle speed does not change because the computer keeps the rpms at whatever value I have entered. It constantly adjusts everything to the set points I have entered in the computer. I wish I had had an outside thermometer so I could know exactly what it was during my test but I think it was in the mid 90 to 100 degrees. My wife didn't think it was that hot but then she wasn't sitting in that parking lot with me for 45 minutes yesterday either. I know my inside manifold air temps( the temp of the hot air being sucked in) went to 140 when the coolant temp was at 215 and went down to around 120 after it came down to 200. I assume it means underhood air temp came down with the timing adjustment telling me that probably not as much burning fuel was exiting the exhaust ports.
So I can say there's no doubt that changing only the timing settings is what made the difference in idle temps yesterday.
By the way, I got on the freeway and the temp held right at 194 till I got over the hill into some cooler air. It went to 188 and stayed rock steady till I got home. It was about 70degrees out.