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Old 01-19-2014, 12:23 PM   #1
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OK - here is the sound of the exhaust with 10mm, 13mm, and 15mm holes. Subtle difference in sound - the 10mm is a little more raspy and the 15mm a slightly deeper note. If you go larger I would image it will get even deeper.

Porsche Boxster 986 Crios Mod - YouTube
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Old 01-19-2014, 04:33 PM   #2
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Based on the great results I had when I installed the 2nd cat delete pipes on my top speed muffler, im thinking that doing the 2nd cat delete pipes with the stock muffler may also produce the great improvement in exhaust tone and throttle responsiveness.

Has anyone tried that?
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