Thread: Keep the CAT on or off?
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Old May 22, 2003 | 11:10 AM
  #9  
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Epoch
CHRISTMASTIME IN IRAQ
 
Joined: Apr 2003
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From: Bay Area
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"test pipe" is just a tube with a hole for your O2 sensor, and flanges to connect your header to the rest of your exhaust. Simple, yet horrible for the air you breathe
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