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Old 01-23-2011, 07:36 PM   #4
MileMAN402
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Drives: 2010 2SS/RS & 2001 Audi S4
Join Date: Apr 2010
Location: Central PA
Posts: 644
They are 2.5" in and 2.5" out to the tips.

But what is your goal? Do you want to keep it quieter than the muffler delete? Then it doesn't really make sense to take out just the resonators as it will most likely just add some drone. If you want some better flow then you should take out the entire H-pipe and replace it with an X-pipe. Also, Maryland Speed has some pretty good deals on axlebacks.
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