Decided to take the boat to Cobra Power in Miami. Great guys. I pulled in and they jumped right on and had her running and on the water in 3.5hrs.
The port motor it showing low fuel pressure and will stumble and die unless you feather the throttle back and forth. If I turn on the boast pump the pressure doesn’t change. Idle 5psi and running 3psi.
Could this be a bad fuel regulator?

curious, what are the black things with mercruiser labels?

Thats old school DTS. Makes shift and throttle like butter!

power shift, vacuum assist shifting

more sh!t to break 😂🤣