[pete r]

Here’s an interesting observation, the car runs a lot better with the fuel pressure regulator vacuum line disconnected and plugged.
With vacuum to the regulator the short term fuel trims are positive 20/25% at idle and positive 10/15% while driving.
With no vacuum to the regulator the fuel trims at idle are around positive 10% and floating around zero while driving.
Pressure seems to be okay but I have a new regulator on the way just in case