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JCW R56 Challenge Cup Exhaust...

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Old Aug 8, 2009 | 01:45 PM
  #26  
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Augie05
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From: Cary, NC
Originally Posted by R99

I now have the Factory JCW backbox fitted to my JCW Stage 1. It's louder on the Stage 1 JCW than it is on the Factory JCW for some reason - but its not as loud as the challenge box was.

test.
Do u think because the factory jcw front exhaust provides more noise reduction? U only replaced half of the system. Right?
 
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