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Thanks in advance to anyone who can shed some light. I have been experiencing this rattle from what I believe to be right now the back muffler part of my car. I have a Tsudo catback exhaust and the rattling noise it produces is very irritating at times. I've been told that sometimes it has something to do with the exhaust hangers....what exactly should I do? replace them?

 
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I have the same problem, and I can't stand it. It seems like it only rattles when I make a left turn. I think I just need to move the hagers up a little bit. If you figure out the cure please share the info with me...lol

 
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Im gonna bump this, someone has to know. Any help is appreciated. This is definitely an unsolved mystery for me. If I had the money I would say 'F' it and by a whole new catback exhaust but why if its a simple fix?

 
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The metal part of the exhaust hanger are connected to a rubber hanger. First thing you gotta do is find the source of the rattle. Get under your car and give it a good shaking and listen and look for where it might be rubbing. Once you find the rattle, you can then determine what needs to be done. Or, go to a muffler shop and ask if they can put it up on the rack and check for you. Slip them 20 bucks and I bet they'll hook you up.

 
Rep Power: 333

i have similar problem. my muffler tip keeps bumpin against my rear lip. i think if i were to get diff rubber hangers so it would sit lower, it wouldn;t bump against it any more. but i like the clean and flush angle of it.

but i do have aproblem with my muffler swinging around over rough roads. idk what i can do about that? its no vibration, but a rattle/bumping

 
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my muffler is making the same rattle, but when I push it to the right it goes away for a little and comes back again. I think it's hitting the sway bar.

 
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i have a greddy cat-back it makes a noise when it gets wet from rain. it's sounds like a grunt from where it bolts to the cat or something not quite a rattle i re-tightend the bolts and shook the heck out of it. yet when it rains it gets LOUD. dunno what to do other then park it when it rains

 
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i have the same thing...

 
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if you had it custom made for the car at a shop there can weld beads inside muffler that make that noise.

Also, on my custom exhaust one of the hangers appeared to welded good but when I move the exhaust from side to side rapidly with force there was part of the hanger that was free enought to make contact with the muffler and make a rattle sound. I had a shop throw a couple tack welds and was good. A five bill fix.

 
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i just figured out that part of my piping on my exhaust is rattling against the bottom of the car. i thought it was the cat against the heatshield since i noticed a couple rub marks on it. but i looked a little further down and i saw where it was hitting. i dont know if longer rubber hangers will help or if i have to have it custom bent. it kind of sucks because it should fit right out of the box!

 
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And all this time I thought the rattling was probably my mesh in my back fender of my kit, but now that i look back on it the rattling didnt start till shortly after i got my exhaust... Im gonna peek my head under there sometime this weekend and see what is causing all the ruckus