Wow, if you can do that, it would be really cool!
To be honest, I don´t really know what would be the "perfect" average. It is good to be able to see the fuel drop when I accelerate, but it seems to me like I am reading quite a bit of the pulses from the lift pump. Maybe cut it in half and do 5 updates/sec? What do you think?
At the moment I am reading fuel pressure three places:
Acd1("oil pressure sensor"), Acd2("boost pressure sensor") and Acd3("fuel pressure sensor").
It might sound crazy, but I am in the process of converting my car to run on WVO, so it´s useful to see the fuel pressure different places in the line (both for diesel and veg oil).