Actually thats not quite tru, and it's not normal.

I'm not sure why yours does it, but it's ussualy if you've messed with either your TPS, or you IAC.

I actually switched to OBD1, which has caused a whole world of problems with my idle, but before I switched recently, when I was using my stock ECU, or when I switch back, nothing like that happens, if I drop the clutch it always goes back to about 850 rpms regardless of how I was driving. Out of all the ITRs I've driven at the shop. I've never noticed that any of them do it.......Not saying that none of them have, I just figure that would be one of those more noticable things, as you said, it would be pretty annoying.

If it's still under warranty, take it back to the dealer, and they'll hook it up to the computer, and make sure all the readouts, are with in the specified parameters.

Good luck......