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ngrover -> RE: pipe radius (11/6/2007 10:46:47 AM)
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Can someone tell me the exhaust diameter starting from the turbo back? What is the diameter of the turbo opening on a K03 / K04. I want to do a custom exhaust and I've seen test pipes that are 3 inch and some that are 2.5 inch... which is normally better with the stock exhaust and does the 3 inch test pipe go from 3 to 2.5 inch exit diameter?
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