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Old 07-09-2015, 10:34 AM   #2
RandallNeighbour
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Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,243
I looked into this a long time ago for my 1997 and ended up buying a Top Speed twin chamber twin tailpipe muffler and it sounds amazing. If you search the threads here you'll find upgraded clamps that are said to eliminate the cabin drone. Not sure if it will really eliminate it, but if it drops a lot of the drone out of the exhaust you're home free.

The Top Speed unit sounds glorious at wide open throttle. Seriously.

AND, it's half the weight of a factory Porsche muffler and operates a LOT cooler. My factory muffler heated up the back trunk on long trips and my tennis shoe melted into the laces tucked under the bottom of the shoe! The factory ones must be packed with material or baffles and they build up a lot of heat.
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