CS9005 Posted May 21, 2012 Share Posted May 21, 2012 I'm not very good with cars so I'm sorry if this is common sense, but no one has been able to answer my questions so far. 1) I have a K&N filter and a white filter behind it as you can see in the picture. Is there a reason to have two filters because I've seen videos on youtube where the guy's legacy only had the K&N one. 2) What is the purpose of the circled part? It seems useless. http://desmond.imageshack.us/Himg820/scaled.php?server=820&filename=dscf0421s.jpg&res=landing http://img220.imageshack.us/img220/7108/dscf0422j.jpg Link to comment Share on other sites More sharing options...
bmx045 Posted May 21, 2012 Share Posted May 21, 2012 that item you circled is called the placenta, it's a silencer/tubulence reducer, leave it on. that other filter was some emissions thing, my 09 2.5i didn't have it. Link to comment Share on other sites More sharing options...
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