Help Passing CO Emissions

		NASIOC > NASIOC Chapters > Rocky Mountains Impreza Club Forum -- RMIC
Help Passing CO Emissions

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12-04-2024, 11:32 AM	#1
motoxnate Scooby Newbie Member#: 486963 Join Date: Jun 2018 Chapter/Region: NESIC Location: Connecticut Vehicle: 2004 WRX Black	Help Passing CO Emissions Hey all, moving to CO in a couple months and I am trying to figure out how to get my WRX registered there. Currently running catless without issues where I live, but CO has a sniffer test with a dyno. Considering buying a 2nd downpipe and welding a cat into it, not sure if 1 will be enough and if I should be looking for a GESI / CARB cat? Any recommendations would be highly appreciated. Thanks * Registered users of the site do not see these ads.

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