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Old 02-01-2016, 05:08 PM   #710
86fun
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Join Date: Jan 2015
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Interesting, I definitely have a rumbling/tumbling of rocks or marbles sound, loud enough to be heard in the car. There is also a whirling/whining when it is rev'd or makes boost, but that is a distinctly different sound all together. It does sound like I have some noises you guys don't have. I read this is a common symptom of a bad coupler/isolator...
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