Not all MBRP cans are loud. The Race version of their cans are the loudest, and yes they are very loud. I have the trail version which is the quietest version they offer and it isn't loud at all. It is louder than stock but not by much. It is made with great quality and in my opinion, doesn't have a raspy or whiney sound. It has a pretty deep performance sound. I've also heard great things about SLP cans also. Great quality, ceramic finish, and they are suppose to maintain stock sound levels with a deeper tone.
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