Grimnebulin Posted May 18, 2009 Share Posted May 18, 2009 Has anyone put a Cobb (or other brand) downpipe on a newer generation OB XT and thrown any CELs on their car? Just wondering how common this is as I've read it happens and I'd prefer to avoid having any check engine lights come on and freak out my girlfriend. Thanks! Link to comment Share on other sites More sharing options...
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