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      10-26-2008, 05:00 PM   #9
rzm3
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Drives: E92 M3
Join Date: Aug 2007
Location: USA

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1. If I understand correctly the secondary cats are for emissions control during warm-up.

2. Why do you want to remove the secondary cats?

3. A member on this forum had his resonators removed, and he said that it didn't make a big difference in terms of sound (at least with stock mufflers).
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