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      12-02-2009, 11:08 AM   #18
kirby135i
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Quote:
Originally Posted by 335xiRT1 View Post
I was under the assumption that there is a cat in each downpipe, and a additional 2 cats in the Factory midpipes?? Is this true?
that is true, but a catback system just replaces the portion of midpipe up until the 2nd cat. a Full Downpipe back system will be a full 2nd catless system.
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