vacuum

after pluging off whatever is in the pass. fender and the big vac line going to the brake i only get 5-10 vac psi . what am i missing?
 
on my mostly stock 95 i am at 19-20 idle in park or neutral 13-15 stopped in drive. This is on aftermarket boost gauge


If you are referring to the factory gauge forget it, the boost on my factory is accurate, vac for some reason is always like 5" lower than the correct aftermarket.
 
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On my stock car, with my stock gauge i have 18 lbs. of vacuum at idle in neutral on a 5 speed in my driveway. Is this running normally?

Thanks.
 
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