Nah, it's easy. Even with having to dremel the slots on the top of the connector, the install only took about 45 minutes to an hour. It might have been quicker but I was working on a six pack of killians at the same time too. Which is why I didn't take it out the same night I did the install.
I did take it out today, and the temps held at about 85 to 90 degrees for the hour I drove it. I saw it jump to about 94 when I was waiting at a drive thru getting lunch. But still, not too bad. I didn't expect the temps to remain so low, but they held pretty consistent with the outside temps. We had a high of 84 weather wise here, so the temps from the IAT and the outside temps held pretty consistently.