Simple question. I use a Edge tuner for monitoring but I don't see a boost psi on it. Do I have to install my own boost gauge? Does the truck have one built in and I just need to "tap" into it and install a guage? It's a new to me truck. Trying to knock out little issues as I go...

 

I think your supposed to look at MAP pressure then figure the PSI from the #.

 

You can look at MAP like Adam said, but it wouldn't be a bad idea to get a good quality boost gauge in there as well.