Peter,
Your Maf sensor is at end of the lid to your airbox. On the tube headed towards your engine. Undo the two screws and pull it out and spray it with Maf cleaner from the autoparts store. I did a post on this a while back. Your Maf looks just like the na spec Maf.
thanks for that. I think i know the part you mean, and [STRIKE]will search on here as well[/STRIKE] found it!.
cheers
peter