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      08-28-2018, 02:05 PM   #6
BayE30
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Drives: 2011.75 E90 M3 ZCP
Join Date: Jul 2014
Location: San Francisco

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Quote:
Originally Posted by Longboarder View Post
That's interesting...didn't know the primary cats could be swapped out for a track day.

There's another thread in here that I was reading that says it can't be done (once the primaries are removed they cannot be reinstalled).
definitely can be swapped out if they have some V-band clamps welded on. wouldn't take very long to swap them on and off either, as there is no shielding to remove for access.
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Current Garage - [2011 E90 M3 ZCP] [2005 E53 X5 3.0 Sport] [1988 E30 325IS 24V]
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