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any one use exhaust silencers?


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my uncle has a 1991 300ZX and it has dual 4 inch exhaust. we think the last owner hollowed out the muffler and possibly the cat, all we know is it is stupid loud. I just sold the car he was letting me borrow while my jeep is in the shop and now i need another car to use. we don't really have time or money to get a new exhaust put in it at moment. in theory a exhaust silencer attaches to the inside of the exhaust tip and makes the 4 inch hole a 2 inch as well as quiet it down a little.

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