06-03-2009, 01:55 PM
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#10 (permalink)
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Enthusiast Member
Join Date: May 2009
Location: Oildale, CA
Posts: 412
Drives: 2013 911 4S
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Quote:
Originally Posted by semtex
Oh I agree about being surprised that it doesn't make a terrible sound. Don't get me wrong -- like I said in my original post to this thread, I think this little experiment yielded some valuable information, and I'm glad batman_4 did it. Specifically, if we remove the mufflers and it still sounds reasonable, I think we can infer that the stock cats are really, really restrictive. I think we've all pretty much known that for a while anyway. But this just confirms our belief.
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Stock exhaust has 2 cats, 2 diffusers and one muffler. I don't think it's neccesarily fair to say it's the cats cutting the noise. You've got me curious enough to unbolt the rear section of my stillen exhaust to see if it's the cats or the diffusers....
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