Quote:
Originally Posted by BMW_Belgier
Did you get a warning without the tune?
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I have had the AR catted DP on for about three hundred miles or so and have had zero issues. I am still on the stock tune so I can verify there is no check engine light with the catted version (at least in my case). After the first 100 miles or so there is no odor to speak of. Emree's comments on the sound are spot on. I really like how it sounds and I'm considering just leaving the rest of the exhaust stock.