Is the MAC solenoid 'open' or 'closed'

I have only been able to get it to work in 'open'

By doing this, my table will not work since with increased Duty cycle the boost level decreaes, is this wright??

Table will not allow me to have increasing Duty with decreasing boost levels

Can someone post a pic of their initial setup with the MAC solenoid, I can tune and dial in after that, thanks.

 

With a "mac" solenoid it is normally closed
You would increase the duty cycle to create more boost.

http://www.phearable.net/tech has a vacuum diagram