stock exhaust diameter?

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10-18-2011, 12:31 PM

viperpit07

1st Gear

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Join Date: Jul 2011

Location: Menomonie WI (western, WI)

Posts: 141

stock exhaust diameter?

hey guys im thinking of doing custom exhaust on my b5 a4, so my question is what is the stock exhaust diameter size? and what is usually the best size for a 1.8T would 2.5" do it? or should i go up to 2.75"?

01-23-2012, 02:26 PM

NSU TTi

1st Gear

Join Date: Sep 2011

Location: Upstate NY

Posts: 27

Yea, I'm curious myself. How about 3" all the way to the back?

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