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      02-12-2013, 02:12 PM   #13
Andrew@ActiveAutowerke
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Drives: 2014 435I M-sport
Join Date: Dec 2011
Location: Miami Fl

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Quote:
Originally Posted by AGood22 View Post
What size piping would you recommend if i did decide to straight pipe it? (starting after the sensor between cats) and would any error codes show? and what is the outside diameter of the tips you guys have? i really like how they look and i would love to order 4 to run on mine
Stock size behind the cat.
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