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High flow downpipe with cat converter? 2000 Audi A4

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High flow downpipe with cat converter? 2000 Audi A4

  #1  
Old 04-08-2009, 11:28 PM
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Join Date: Dec 2008
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Default High flow downpipe with cat converter? 2000 Audi A4

Are there any High flow downpipes for 2000 Audi A4 1.8T that retains a catlytic converter. Ive only seen downpipes with no cat.
 
  #2  
Old 04-13-2009, 08:29 AM
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Join Date: Aug 2007
Posts: 225
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umm.. as far as I know, don't quote me, but I believe the stock downpipe is 2.25"? You can upgrade to a 2.5-3.0" for better "flow" and then put a high-flow cat on it. That's about as good as you're going to get, unless you go with a test pipe.
 
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