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Question: on Boost/Vacuum gauge

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Old Jan 2, 2005 | 04:27 PM
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From: Da Burgh
Question: on Boost/Vacuum gauge
I just installed a Auto Meter Cobalt gauge.. What is your Vacuum when at Idle?? I get like 3.. but it the boost is fine.. Im stumped on this one..

PLEASE HELP
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Old Jan 3, 2005 | 03:55 PM
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From: Da Burgh
:bump: can someone answer this question???
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Old Jan 3, 2005 | 03:57 PM
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From: DTX
1.8 for me
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Old Jan 3, 2005 | 04:00 PM
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Units folks, units.

~18 in.hg of vacuum at warm idle (850).

d
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Old Jan 3, 2005 | 04:00 PM
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From: Ga
I have the Auto Meter CF Boost Gauge and it Vacs at 15-20.
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Old Jan 3, 2005 | 04:09 PM
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when i was stock i had 15-20 at idle
now i see anywhere from 5-15 at idle.
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Old Jan 3, 2005 | 04:23 PM
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I get about 15-20 at idle..
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Old Jan 3, 2005 | 05:08 PM
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does your boost stay at 21 psi when you set it at 21? or does it jump back down... mine goes to 21 and then jumps to 15... anyone know why?
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Old Jan 3, 2005 | 05:10 PM
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Originally Posted by kayyoevo8
does your boost stay at 21 psi when you set it at 21? or does it jump back down... mine goes to 21 and then jumps to 15... anyone know why?
i take it that you have a boost controller and if so , its installed incorrectly. it should not drop after you set it
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Old Jan 3, 2005 | 05:12 PM
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this is normal - https://www.evolutionm.net/forums/sh...d.php?t=113675
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Old Jan 3, 2005 | 05:14 PM
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boost PSI to BAR converter - https://www.evolutionm.net/forums/sh...d.php?t=114133
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Old Jan 3, 2005 | 08:08 PM
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From: Oakland, CA
i just got that gauge i need to install it
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Old Jan 3, 2005 | 08:18 PM
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where did you tap the guage to? 15-20 mm HG is normal.
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Old Jan 4, 2005 | 06:52 PM
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From: Da Burgh
buddy tapped it from the same line he has on his... off the TB.. i must have a leak cause he sees 15-20 in vacuum...ill take pics tomorrow and post..

thanks for the info
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Old Jan 5, 2005 | 06:37 PM
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From: Da Burgh
i put the t fitting at the fuel pressure regulator??? That line is to the left of the one I saw in another forums bout installing a DEFI gauge.. did I tap the wrong one???
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