Quote:
Originally Posted by batchman
but I am running close to the sound limits at some events. Wonder if these mufflers degrade, I haven't changed anything. Are these mufflers heavy
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They can degrade. Borla uses a packing material as the means of sound attenuation. I don't know the specifics, if it's all glass packing, or glass and steel.
The packing can get compressed to where it does not work as well, or get shifted around or blown out of the casing over time. So yes, they can degrade. If you've had them a long time and they seem louder now than they did, it's possible that's what happened.
Heavy, I don't know. I don't think the weight range is enough to choose a muffler based on it vs sound quality.