Quote:
Originally Posted by Mirko
Does the regular z4 not have cats in the headers as well as section 1 like the z4m?
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The 06-08 facelift US models with the N52 engines have CATS in both the headers and section 1.
Prefacelift 03-05 US models with M54 have CATS in the headers and primary mufflers in section 1.