The baseplate in this context is referring to the intake or what the blower housing bolts too. That earns the head shake, you wanted to give me.
I was asking if anybody had a vacuum circuit. Try? I was asking if.
My question was how do I run a single gauge that displays vacuum and boost accurately. Do I need to explain that further?
Lets start here...
Are you aware of interference in the vacuum signal caused by the impellers?