K&N CAE Caused high pitched squeak, installed Stock Airbox - squeak still there

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ericdmiller

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Hi all,

New to this forum, just picked up 2014 White Raptor and loving it. Decided to jump right in and install a K&N Cold Air Intake. I loved the increased throttle response and higher MPG, but noticed a high pitched squeak when accelerating at low RPMs. Sounds similar to breaks that need to be replaced, the sound drove me crazy so I put the stock airbox back in - the squeak still exists!!

Any idea what could be causing this? I tightened all the clamps while the K&N was installed, didn't help.
 
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