TwinTurbo.NET: Nissan 300ZX forum - -14 at idle is about right as the plenum is in vacuum. When
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Subject -14 at idle is about right as the plenum is in vacuum. When
     
Posted by MixManMash on February 01, 2017 at 10:41 PM
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In Reply To the needle is pegged at -14 at idle and comes to posted by JMartz on February 01, 2017 at 06:33 PM
     
Message you press the throttle pedal, the plates open and the pressure is closer to atmospheric and hence the gauge goes to 0. When boost starts to build the gauge goes positive.

     
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