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View Full Version : a ? about boost gauge.



thunderbird89sc
11-16-2002, 12:23 AM
i was just wondering wht everthing on there means, i Know what th boost and psi stands for, But what about the in-hg or vac, just thouhgt someone might know.


thanks matt

Thrty5thSC
11-16-2002, 01:43 AM
that's your engine vacuum, and it should be 18-20 in-hg at idle.

peace out