Gutted cats, no CEL.
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Got a hold of some gutted cats for my 05, used the Help non-foulers and so far no CEL. Sound is a bit different, good but not as good as the stock exhaust.
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I did both. I never noticed any rasp. The sound to me was exactly like stock but louder... the pitch never changed. I thought it was a great mod for the money. Also no CELs ever with the stock o2 sensors still on.
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