Thread: AR Catted Down Pipes with Resonators
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      06-02-2014, 11:46 AM   #8
badblack550xi
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Drives: F10 550i 2011 F90 2020 COMP
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Originally Posted by dblock2151 View Post
Do these trigger the CEL, or was it the cat-less ones? Only asking because I'm interested.
Only Cat-less trigger CEL
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