TwinTurbo.NET: Nissan 300ZX forum - loss of boost
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Subject loss of boost
     
Posted by bear9820 on April 19, 2010 at 4:01 PM
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Message I received this car as part of an inheritance so it holds
special meaning, I have noticed that in the morning and for
the first few hours of driving I get about 6-7 psi boost,
but after the hour or 2 of driving I only get around 1-2
psi. the plenum stays hot, even with the hood up, for HOURS
on end after shutting the car off. After about 30 min of the
car being off I hear a hiss from the drivers side. I have
ordered a NISMO thermostat, AMZ downpipes, and water wetter
to try and see if temp was the reason for the boost loss, I
know the exhaust is toasted and probably a bit choked due to
the miles on the car so that being said, any ideas on what
the hiss is and why I would loose boost?

     
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