Yes, right out of the OBD2 port.
Too the best of my knowledge the FRP sensor reference is always after the blower where it will see vacuum or pressure. I don’t see how it could work in front of the blower.
I didn't think that would be the case but was looking for an explanation of why your fuel pressure increases. It is not easy to tell without being able to flip through your PID's but it looks like once your load reaches the max of 2.0, that is when your fuel pressure increases-that makes sense as it is sort of a work around for the processor not knowing the exact amount of air going through it. As long as the A/F is correct, it is not an issue, just a different approach.