Adding boost gauge

[trailshredder]

I am putting a boost and pyro gauge in my 2500. My question is, since I have a banks big head with a larger vacuum hose, will this effect the accuracy of the gauge or is PSI of vacuum the same no matter the diameter of house. I know when you talking pressure, for instance in a garden hose, 60 PSI remains 60 PSI whether it is a 1/2" hose or a 1" hose. All that changes is the flow rate. Is this the same when it comes to vacuum?

 

[busdriver75]

60 psi is 60 psi. your cfm's is what could possibly be changing.