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i have hks hi power cat back installed and whenever i go over a bump, it makes a clunking sound. it sounds like the exhaust is banging the ground. i haven't had this before. do any of you guys know what the problem is?:rolleyes:
 

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_PiLF
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jack it up, shake the exhaust a little to see where the freeplay is. examine the hangers.
 

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all of the above. also take your back passenger side tire off and see if it's hitting your sway bar. my greddy evo was hitting mine. took a hammer and hit the exhaust a few time's to dent it a little where it was hitting the sway bar. worked like a charm. and no, there's no way it hurt the flow of the exhaust. small dent.
 

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all of the above. also take your back passenger side tire off and see if it's hitting your sway bar. my greddy evo was hitting mine. took a hammer and hit the exhaust a few time's to dent it a little where it was hitting the sway bar. worked like a charm. and no, there's no way it hurt the flow of the exhaust. small dent.
:iamwiths: With the HKS, there may be a possibility of hitting the swaybar.. just go back there and wiggle it, like ppl have said. Either that, or somethings loose
 
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