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The Stick
Join Date: Dec 2007
Location: Someplace Safe?
Posts: 17,328
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To get the power increase of an X-pipe I had to take the cat off my 928. The cats were part of the stock H-pipe. I did however put sport cats on behind the x-pipe. They actually make the exhaust cleaner than the original cats without reducing the HP over test pipes. I think the sport cats make it sound better than test pipes and help bring the exhaust volume down to legal loudness.
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Richard aka "The Stick"
06 Cayenne S Titanium Edition
Last edited by RKDinOKC; 12-03-2017 at 09:19 AM..
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