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Old Mar 30, 2003 | 09:41 PM
  #3  
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inspyral
のんびり~(´ε`)
 
Joined: Sep 2000
Posts: 2,314
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From: San Jo, Cali
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Most of the time, an aftermarket header will relocate the primary O2 from the 3rd exhaust runner to the collector of the header.
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