I have a F-con and a Blitz boost gauge,
the F-con come with a pressure sensor,and I use a T-connector to connect both sensor's vuccum line,
here is my question , can I use one more T-connector to connect the boost gauge?

 

Sensors only detect boost pressure. So as long as you do not remove air pressure, you can T-off your boost guage. Don't T-off too much because it will cause lag in pressure response.

Jay