my boost gauge....

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06-05-2007, 02:23 PM

mazda/nissan

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my boost gauge....

quick question, when you have a boost gauge removed should it read 0? mine reads 10, should this be?

06-05-2007, 02:28 PM

SloS13

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I don't want to overwhelm you with technical jargon but your **** is fucked up.

06-05-2007, 02:31 PM

mazda/nissan

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damn, when i turned down my compressor to about 5 psi and blew it into the gauge it read a 5psi gain, but to 15 and not 5, it was a freebie too..

06-05-2007, 02:34 PM

y8s

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10 what? kpa? atmospheres? psi?

most mediocre gauges (autometer) read 1-2 psi off at rest.

Defi cheats by making everything point straight down... so technically mine reads 30inHg of vac at rest

http://gallery.y8s.com/miata/turbo/DSC00656.jpg.html

06-05-2007, 02:35 PM

y8s

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Quote:

Originally Posted by mazda/nissan

damn, when i turned down my compressor to about 5 psi and blew it into the gauge it read a 5psi gain, but to 15 and not 5, it was a freebie too..

oh in that case see if you can move the needle. if there's a stop, figure out what PSI you'd have to put in it to read 10 past that stop

06-05-2007, 02:42 PM

Joe Perez

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Most mechanical vac/boost gauges should read zero when the engine is off or the gauge is disconnected.

Electronic gauges cannot be counted upon to read any specific value when de-energized. Some will return to the lowest point on the scale, some will just jump to a random value, some will remain wherever they were when power was cut...