TwinTurbo.NET: Nissan 300ZX forum - 93TT JWT ECM will work fine for older years.
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Subject 93TT JWT ECM will work fine for older years.
     
Posted by Fast300 on August 31, 2008 at 11:17 AM
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In Reply To Two Z32 questions....using a JWT '93 TT ECU in a '91 posted by w8lifter4 on August 30, 2008 at 06:46 PM
     
Message The only difference is that the 93+ cars have no AIV system, therefore ECM's have no circutry for it.

The later ECM's have different idle software to make up for the lack of an AIV system.

     
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