highwind Posted April 15, 2015 Share Posted April 15, 2015 I planning on getting a new catless manifold back exhaust system made for my car 09 Legacy 3.0R and I was wondering if this would cause a CEL to come on?? Link to comment Share on other sites More sharing options...
snow05gtRI Posted April 22, 2015 Share Posted April 22, 2015 no cat, probably. O2 sensor readings will be all out of mess, and will probably call up the cat CEL Link to comment Share on other sites More sharing options...
highwind Posted April 24, 2015 Author Share Posted April 24, 2015 is there any way around that? Link to comment Share on other sites More sharing options...
snow05gtRI Posted April 24, 2015 Share Posted April 24, 2015 probably. people run catless on LGTs often. might just be a CEL disable, but that would require a reflash of your ECU I think. might be able to hard wire the O2 sensor in some way to not provide a bad reading, too. why bother getting rid of the cats? Link to comment Share on other sites More sharing options...
highwind Posted April 25, 2015 Author Share Posted April 25, 2015 ya i guess i will keep them for meow and thanks for the info Link to comment Share on other sites More sharing options...
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