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Under Construction
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8,417 Posts
its the lack of 2 cylinders you're hearing


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haha jk, it's typically the o2sensor bungs, there are washers on them.
 

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Str8upPERFORMANCE
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330 Posts
get underneath it and hit the cats with your fist and they will proly rattle. you need new cats.
 

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GMFS MoPar/Air Force Crew
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5,457 Posts
Probably just a heat shield. Cut them off first.
 
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