New filter installed.
After start up: pump 65, reg vac hose removed 40, connected 29.
After warm up and and then hard accelerations: drops as low as 10 and returns to 20, then slowly back to 29. Rechecked pump 65???????

 

I'm not sure of exact pressure reading BUT my fuel pressure increases slightly when I push more on the gas.

Is you car running well?

I am messuring fuel pressure from the fuel entry line, but my fuel pump has the first regulator removed. (the one right by the pump)