TwinTurbo.NET: Nissan 300ZX forum - Emissions: '91tt failed NJ low-idle, passed high-idle test.
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Subject Emissions: '91tt failed NJ low-idle, passed high-idle test.
     
Posted by AllenS on May 03, 2011 at 12:12 PM
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Message All emissions components stock except for intake/K&N filter and cat-back. Passed last time with same setup. Since all was fine at 2500rpm but HC and CO high at idle I assume first stop is at the AIV system. They no longer check NOX. Other suggestions?

     
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