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New to turbo's, interpreting the boost gauge

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Old Oct 30, 2005 | 08:40 PM
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zze86's Avatar
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New to turbo's, interpreting the boost gauge

just installed my boost gauge and just trying to see if this thing is reading correctly as it is very active. I wasn't expecting it to be so active....

It's a VDO Vision vaccuum/boost gauge from 42draft designs.

With the engine off, the needle sits slightly lower than 0.

With the engine on, at idle the vaccuum sits around 20 in/hg

Just cruising, no accelleration, vaccuum sits around 10 in/hg

WOT, it'll go to roughly 18-19 psi and taper off to 16 or so @ redline.

Engine braking, vaccuum is around 25 in/hg or so

Does this sound like "normal" #'s?

Thanks in advance.

-Chee
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Old Oct 30, 2005 | 08:55 PM
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yup...
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Old Oct 30, 2005 | 08:57 PM
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yep
https://www.evolutionm.net/forums/sh...d.php?t=113675
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Old Oct 30, 2005 | 10:21 PM
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+3
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Old Oct 30, 2005 | 11:16 PM
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yep +4
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