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Anyone think of why my vacuum seems to have increased from 20 to 25 psi?. When I first installed my boost controller and gage (Autometer), the gage read about 20 (typical for our cars) but its now about 25 and sometimes higher - i.e more vacuum, I know a leak will reduce vac but why increase. It's a turbo so maybe the vacuum pump?

thanks in advance
 

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does it idle at the same rpm as it did before you installed the boost controller?
 
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