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Vac. On Boost Gauge

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Old 03-21-2004, 08:33 PM
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i have a boost gauge that reads vac. at idle it reads 16 is that good?when you rev it boost goes to a little over 5lbs is that good?
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Old 03-21-2004, 08:41 PM
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16 isnt bad...i believe the ideal vacuum should read between 18-21 (correct me if i am wrong) and seeing a little boost at idle is fine it means that the butterfly on top of the turbo is opening up properly. 5 lbs seems a little high for nuetral but someone else can confirm that one.
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Old 03-21-2004, 09:23 PM
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My Vac is usually at 18 and I rev in neutral I hit about 3lbs.
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Old 03-21-2004, 09:28 PM
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ok thanks
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