I installed a K&M CAI about a month ago, and i noticed a kinda rattling noise. I installed per the instructions and always check periodically to make sure everything stays tight. I called K&N and they told me that what i was hearing was probably the throttle body and that it was normal. I can hear the filter sucking in air which i know is normal, but wanted to find out if anyone else has this slight rattling kinda sound. Thanks.