I went ahead and added a ground wire to the boost sensor then drove it after. It started missing throughout the RPM band under load. For now I've disconnected the ground wire and it's back to normal again. I'm trying to see if my 3800k hesitation will go away, if boost sensor won't work then I'll try the ECU.
Heard of anything like this?

 

You probably already guessed, you may have grounded the wrong pin.