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^ Cool. I have the non-res touring and so if I got a catted downpipe I have been told that I would have to change to res touring. Too much of a hassle, really. That's why I'm thinking of just leaving my set up (which already sounds great!) alone.
I am already fooling with cats (and a tune coming up!) on my Porsche and I don't want to deal with emissions issues on 2 cars as well
But I can't help but be curious if a catted dp on the BMW will improve power and turbo leg ever so slightly?
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