TwinTurbo.NET: Nissan 300ZX forum - vacuum please.
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Subject vacuum please.
     
Posted by niXit on January 20, 2003 at 10:46 AM
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In Reply To Come on folks, I need some brain churning on posted by ShokWaveRider on January 20, 2003 at 10:06 AM
     
Message :on what to stuff in the speedo space if anything. I do like the Voltmeter idea.

a boost guage without accurate vacuum readings is a waste.
a vacuum gauge can lead to diagnosing possible boost leaks.
I know I draw -480 to -500mmhg(?) cold idle. If it jumps to -400, then I know there is a leak in my intake path that may cause the car to boost abnormally.

:Remember, when thinking, please consider this. I don't personally think you need flashing lights for flashing lights sake. (Too Boy Racer) Think practicality. No one knows your cars better than you do. What would you find useful ALL THE TIME, not just a one off like the A/F, it will spend most of the time turned off. I am thinking of replacing mine with an injector monitor. If you have water injection, a water injector monitor.

I do, as do several others. But we are doing a hybrid 2C kit. A new 2D kit is coming out based on the 300ZX group buy we did two years ago.
Unfortunantly, we don't use a solenoid. We use the high speed injector. Also, our water deliver parallels fuel delivery. So, fuel injection duty cycle = water injection duty cycle, and vice-versus.

That is useful info in case the solenoid sticks as they often do. And as you folks are always playing with alternate boost. The amount your fuel injectors are open is also useful.

very very very much agree. thats also in my plans of visual upgrades. way more important then a boost guage, since a boost guage can be had cheaply, and is available at 15 places within a 5 minute drive.
A fuel injection duty cycle monitor is not.

I personally think my stand alone Air Fuel meter can be plugged in when needed and removed when not. I will also work on a peak hold option and examine the cost, design versus reward on it.

     
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