TwinTurbo.NET: Nissan 300ZX forum - Drive the piss out of your car. The hotter the cats are, the
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Subject Drive the piss out of your car. The hotter the cats are, the
     
Posted by Polish on December 20, 2011 at 6:28 PM
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In Reply To Failed emissions yesterday, not surprised though as no cats posted by MidLifeZ (DFW) on December 20, 2011 at 02:08 PM
     
Message better they will work. It is also important that you don't let them cool down too much while waiting your turn to test. If you have to wait for other people, boost around the block until they're ready for you to pull into the bay. Don't let your cats cool down.

Retarding the timing is also very helpful. I retarded my timing something like 5-7 degrees and that helped quite a bit.

Good luck!

     
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