For the MAF you just need to take it out, its in that big black part of the air box if you have the stock air box. If you have a CAI then its easier to get out. They are some tamper proof Torx bits that you need to get it out. Im not sure what size though. Then you just spray the little wires with electrical contact cleaner. I did it alot to make sire that they were cleaned very good.
As far as the IAC, its pretty much the same, just take it off, I think its two screws, then clean it. I used Carb cleaner on that.