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      08-02-2022, 09:41 AM   #11
marcthedark
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Drives: M240i xdrive Convertible
Join Date: Apr 2017
Location: Phoenix Metro Area

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Catless sounds non premium (best way I can describe it). And the smell wouldn't work for me.

If you have a high-flow cat you miss out on a few hp. But will the extra 10-20hp noticed by you? In a tiny 100hp ecobox 10-20hp are a lot, but in a 400+ hp car not so much.
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