How much power is locked up in the exhaust? Let's find out...

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Jun 16, 2010 | 08:41 PM
  #26  
Quote: a 2.5 inch freeflow exhaust was worth 10 whp over the factory jcw exhaust when i dyno tested my car
Was that with changing the downpipe + the rest? Or just the catback?
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Jun 16, 2010 | 08:55 PM
  #27  
was with catless downpipe
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