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Should my new muffler be rattling?

 
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Old 04-15-2014, 07:40 PM
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Should my new muffler be rattling?

Just today I had the mechanic give me a full-up replacement of the exhaust with basic tubes and your average flex pipe and a new cheap muffler. In the process, I now have a resonator delete exhaust.
Is it odd, or is it normal to have rattling INSIDE the muffler when there is no resonator??

I checked everything, there are no heat shields and all the welds and exhaust hangars are secure. Forget about clamps, none. Solid.
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Old 04-15-2014, 11:29 PM
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Re: Should my new muffler be rattling?

There generally are no clamps on the aftermarket systems I have seen, there might be a section or two that are bolted but it's not uncommon for a shop to just bend and weld it into a single piece. Are the stock heat shields still in place above the exhaust? It's a really bad idea to remove these, but nobody puts additional ones on. It should be insulated from the body with some rubber hangers too. It doesn't sound like they have done anything wrong though. It'll probably be a little loud and raspy until the system builds up a bit of carbon in it. Does it rattle at idle or as you rev it?
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Old 04-16-2014, 12:19 AM
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Re: Should my new muffler be rattling?

It rattles just after stepping on the throttle. The vast majority of the time so far it doesn't rattle at idle. With really slow-paced revving I can't keep the rattle low but after a certain RPM it will rattle always.

I keep thinking that it's just a cheap universal muffler and that I should replace it with a slightly less cheap, slightly better quality one. But I could be wrong, it might be true that I need a resonator. And according to what you're saying there's a possibility it could be "too clean".
There are heat shields above and detached from the exhaust, on the body. When I said there were no heat shields I was meaning anything that would be attached directly to the exhaust pipes (sometimes cars have those, stock, but I am unsure of the Prelude).

Appreciate your comment
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