No You don't have to But. If you are in the cold weather area Yes you will need it no dout. There has been many debates on heating the intake. You can go and do a search on this matter.Then if you still have any Questions you can ask them.Hope this helps
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NovaMan/Twisted6/Larry

Larry/Twisted6
[oooooo] smile
Adding CFM adds boost smile
shocked God doesn't like ugly.