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Vacuum reading for Greddy boost gauge

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Old Aug 16, 2005 | 09:40 AM
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Vacuum reading for Greddy boost gauge
Fellas, I have a greddy peak hold electronics boost gauge, and I was wondering on where should my Vacuum reading be at idle?

The greddy gauge reading is in bar...

Please advise.

Thanks
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Old Aug 16, 2005 | 09:43 AM
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It should be about 1.7 BAR
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Old Aug 16, 2005 | 09:47 AM
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Well, vacuum is measured in mm/Hg on the Greddy, and I run about 400 when the car is warmed up. I'm sure it varies with ambient conditions also.
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Old Aug 16, 2005 | 09:47 AM
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500....well tahts is what mine is at....on my lancer...
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Old Aug 16, 2005 | 09:50 AM
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i just bought a use one without instructions one

anybody know which wires go to which?

there is an orange, white, red and black

where do they go?
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Old Aug 16, 2005 | 09:51 AM
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at what point can you tell if there's a leak?
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Old Aug 16, 2005 | 09:56 AM
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SilverEvo8owner
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the guage will read 0 ifits a big leak
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Old Aug 16, 2005 | 09:57 AM
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well red is power....black is ground....
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Old Aug 16, 2005 | 09:59 AM
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Originally Posted by SilverEvo8owner
i just bought a use one without instructions one

anybody know which wires go to which?

there is an orange, white, red and black

where do they go?
I posted on this awhile back:

https://www.evolutionm.net/forums/sh...d.php?t=148011

That's just where I wired it, you may find a better place for some of the wires, but at least those listed work.
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Old Aug 16, 2005 | 10:00 AM
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mine reads 500mm/hg at idle on my evo
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Old Aug 16, 2005 | 10:07 AM
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Originally Posted by evo8forme
at what point can you tell if there's a leak?
You need to leak test the system, here's a starting point:

https://www.evolutionm.net/forums/sh...d.php?t=103044

There's other threads about leak testing.
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Old Aug 16, 2005 | 10:08 AM
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Originally Posted by Lancerguy'03
well red is power....black is ground....
Duh
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