vacum at idle?

hey guys i know this has been posted but i couldnt find it. What kind of vacum readings are you guys getting while at idle. Mine shows -10 on my ap.
 
yeah thats normal

My boost gauge shows -20 to -21 in HG, which is equivalent to around -10 psi
 
If your saying that your vacuum reading at idle is 10 Hg/in then that is not normal. Something is wrong to produce that reading at idle.
 
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