71 Duster 360 turbo build

subcom said
Boost referenced FPR? If it is you’d usually see a small drop in fuel pressure when the FPR sees vacuum, not an increase. Not sure if sensor placement would have any impact. My sensor is installed in the FPR body.

Yes. Gauge on the FPR set to 60 static, pulls to 50ish at idle, and 1:1 rise with boost.

0-5 sensor. Again, it reads correctly in the garage with the pump running and motor off.