A friend of mine that was a VP of engineering at Subaru for decades looked at the data log and thought it was healthy. He said the next step is to put it into closed loop/learn mode.
At this point it is easy to move the plumping around and I will try some other setups.
I came across a tubing material that seems appropriate for this setup:
High temp 1/4” Nylon PA6 tubing. 120*C /248*F. Perfect for plumbing wastegates, blow off valves, fuel pressure reference lines.