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      06-27-2011, 03:53 PM   #4
NA_Villhauser
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Drives: 2011 128i 6MT, sport pack
Join Date: May 2011
Location: Lansing, MI

Posts: 36
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I'm bummed that my car has the secondary cats but no 3-stage intake. My engine is clearly marked as an N52B30AE. Why would it have the extra cats?
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