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Originally Posted by Roger8519
Everytime that my car is around 1500 RPM it makes a sound llike something is vibrating or rattling, speed does not have an effect on the sound, it is only at that speciafic RPM. Anyone know what this could be, it is very annoying and makes the SVX sound like a piece of crap, which we all know is forbidden lol. PLEASE HELP!!!
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It's most likely the baffle plates in the resonator. It looks like a cat, but isn't.
[When it's rattling, it's actually a dog.
]
Replacement with a straight pipe works, but changes the sound for the worse, big time. A new resonator is expensive.
Best advice I can give is to cut out the resonator, and temporarily replace with straight pipe. Keep the resonator.
If you are happy with the new sound, then OK. If you don't like the sound, cut open the resonator around the circumference with a fine disc. There are baffles inside. They will be loose. Spot weld them. Weld back on the lid. Cut out the straight pipe and put back in the repaired resonator.
No more rattles.
Joe
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