BMW M3 Forum (E90 E92) - View Single Post - Does any one replace their primary cats with high flow primary cats? especially s/c'd

Ashley_rj · 05-10-2020, 03:47 AM

Scrippy- you said exactly what I was thinking. I am wondering about cutting the 400cell cats out and putting in some high flow green cats? If they fit? I am wondering if they will after some of the above comments.

05-10-2020, 03:47 AM	#13
Ashley_rj Private 31 Rep 96 Posts Drives: e90 M3 2009 harrop s/c Join Date: Mar 2019 Location: Melbourne iTrader: (0)	Scrippy- you said exactly what I was thinking. I am wondering about cutting the 400cell cats out and putting in some high flow green cats? If they fit? I am wondering if they will after some of the above comments.
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