So I was able to replace the MAF on my son's Saab 9-5 and make the check engine light go out quite easily thanks to the modern miracle of you tube and a saab owner's bulletin board. Now what do I do with the old MAF? I hate to just throw it in the garbage, as it probably has some platinum in it. Do you think Auto Zone or some other chain parts store would take it? I am trying to do the right thing for the environment.