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Old 05-21-2007, 11:57 AM   #9
07 Carrera S Cab
Boxtaboy's Avatar
Join Date: Nov 2005
Location: New Jersey
Posts: 2,273
Originally Posted by clb0099
so like my orginal post where the two pipes go into the tip is good enough? That isn't illegal is it? I am going to have the place look at my exhaust again and see what they can do.
Modifying your exhaust after the cats is fine, so your muffler mod is no problem. Changing the muffler itself is no problem either. As long as you don't mess with the cats, you're fine from the legal standpoint.

I am thinking your muffler shop didn't really do the muffler bypass correctly. If they actually made pipes that go from the pipe connecting the cat to the muffler tips, the sound increase would be definitely noticeable by you.
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