MAF is located after the airbox before the tube that leads into the engine. Its on the left side basically on top of the airbox. You need to remove the tube from the one side and I think guys spray electronics cleaner on it. You can search for it.
Original post sounds like car was jumping into safe mode doesn't it? I was thinking that it was something more than an MAF, like a bad coil pack or something. Throw any codes?
I'm too nice to you guys. Go here for MAF cleaning:
Its from those crazy TT guys, but its good general info.