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Old 12-31-2016, 01:01 PM   #4
BIGMACHDADDY
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Join Date: Apr 2007
Location: Woodbridge N.J.
Posts: 221
Re: Clogged Muffler?

years ago I had a 02 gt and had put bbk catted x pipe on and had similar issue. what it ended up being is a piece of the cat got stuck inside the flowmasters. the cats worked fine with no issues either. I didn't find out until I took everything apart and heard rattling in the muffler when I shook it.
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