Funny you should ask..... I am on the phone right now with Sunpro/Actron. They were supposed to send me some o-rings, but I don't even know what they sent me. Looks like the insides of a valve or something??? Anyway, I STILL don't have the parts.

Are you thinking that the the fuel pressure is somehow causing the loping idle? If it is I would be surprised since it is VERY rhythmic and not erratic like you might expect.

I will try to disconnect the electric plug when I get home to see what happens. I think I saw somewhere, a test for the MAP sensor so I will see if I can find that too. I know the cheap Haynes just says "Replace it". And I am fairly certain I can't plug the manifold port and expect it to still run. It died with in seconds of me putting my finger over the port.