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BMW 3-Series (E90 E92) Forum
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05-28-2023, 09:24 PM | #2 | |
Lieutenant
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Drives: 2007 E70 4.8i, 2008 E90 335i
Join Date: Jul 2015
Location: Phoenix, AZ area
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Quote:
It also has no significant power advantage and will make more drone. My 335i had it done by the PO and I wish they didn't do it... Removing primary cats helps power but the secodaries really don't. Plus it is good to have the secondaries if you ever remove the primaries to keep the smells down, etc |
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BlackNight287.50 |
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