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Old 10-27-2012, 05:58 PM   #1
scubywrx89
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Default what is good idle and vaccum on 02 wrx ?

What is the idle suppose to be at like the mark points and on the lamco gauge where is it supposed to be ?
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Old 10-27-2012, 07:02 PM   #2
Concillian
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750 RPM (keep in mind the tach has no mark for 250 RPM)

I think the vac spec is 17-18 in Hg at idle? Not 100%. Most sit a little better than 18. Convert that into whatever units your gauge uses.
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Old 10-27-2012, 07:25 PM   #3
scubywrx89
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My idle is at 750 but my stock lamco gauge doesn't even have 17 or 18 hg it goes up to .1 which is only 14.5 mine sits at .07 doesn't make sense ?
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Old 10-28-2012, 10:52 AM   #4
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What are the units on your guage when in vacuum?
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Old 10-28-2012, 12:45 PM   #5
hoffmanEstates
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I am -20"HG to -23"hg
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Old 10-28-2012, 01:02 PM   #6
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600-800rpms after entering closed-loop mode (your car is warmed up), 16-22hg (this is not a negative value, btw)
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Old 10-28-2012, 01:25 PM   #7
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Quote:
Originally Posted by FraudulentNeon View Post
600-800rpms after entering closed-loop mode (your car is warmed up), 16-22hg (this is not a negative value, btw)
It depends on if you are talking absolute or reletive pressures and if you are talking about vacuum specifically to whether or not its a negative value.

If you say 15 in Hg vacuum you are saying that the value is a negative value in relation to atmospheric pressure. 15 in Hg vacuum = -15 in Hg below atmospheric pressure or ~ 14 in Hg absolute( atm press = ~14.7 psi = 29.9 in Hg)

15 in Hg = ~ 7psig if you are not talking about vacuum specifically

so eventhough the number isn't represented as a negative, it is.
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Old 10-28-2012, 03:31 PM   #8
scubywrx89
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Guys im asking about the stock lamco boost gauge that is in MPa mine is around .07 at idle when warmed up is only goes up to .1 on vacuum side
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Old 10-28-2012, 09:00 PM   #9
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Ignore that
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Old 10-28-2012, 09:38 PM   #10
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Check connections
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Old 10-28-2012, 10:18 PM   #11
kellygnsd
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Quote:
Originally Posted by scubywrx89 View Post
Guys im asking about the stock lamco boost gauge that is in MPa mine is around .07 at idle when warmed up is only goes up to .1 on vacuum side
.07 MPa vacuum is about 20 in Hg vacuum which is good. What's the problem again?
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