TwinTurbo.NET: Nissan 300ZX forum - Actually, non AIV cars with '93+ software are even cleaner..
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Subject Actually, non AIV cars with '93+ software are even cleaner..
     
Posted by sorka on November 18, 2005 at 10:12 PM
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In Reply To Reagarding SoCal testing emissions..... posted by Boosted_One (SoCal) on November 18, 2005 at 09:51 PM
     
Message than '90-'92 with working AIVs. The point of AIVs was to reduce emissions because of the extra fuel the ECU added to smooth out the idle. The idle issues were resolved by '93 and they removed the AIVs and leaned out the idle program. '93+ cars did pay with a slightly bumpy idle. If you've driven a 90-92 car their idle is typically smoother, but the difference is slight.

     
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