GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

long tubes and no tune?

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Old Jan 13, 2007 | 06:29 PM
  #11  
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did you leave your cats on?
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Old Jan 13, 2007 | 06:53 PM
  #12  
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I put a set on for a friend he didnt get a tune for a few months and everything was fine
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Old Jan 13, 2007 | 07:33 PM
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and how long have you been driving it?? mine took about 2 weeks lol. not daily driven but none the less.
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Old Jan 13, 2007 | 09:57 PM
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Originally Posted by DozerDan
did you leave your cats on?

no it has little straight through resinators between the sensors though.

Last edited by 007gmc; Jan 14, 2007 at 03:02 PM.
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Old Jan 14, 2007 | 02:08 PM
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The precat O2 sensors are intsalled I hope.

Installing headers along withcats and the pre and post cat sensors will NOT cause the SES light to illuminate.

peace
Hog
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