Quote:
Originally Posted by hardtopte72
That is the filter for Hydrocarbons. It is not a serviceable filter on models equipped with it (most Toyotas 2004 and up).
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^ Yup, it is the filter for hydrocarbons. I have removed it on my intake to get more airflow. It is riveted in, with rivets that are built into the intake box... so to remove it you have to essentially break/cut off the rivets. That means once you remove it, you cannot put it back in... at least not easily.
EDIT: found a link for removal of this on a 4Runner, but its essentially the same:
http://www.top4runners.com/ja/2007/hcf.html