Starting to use E30 mix on my single turbo N54 (jb4+BEF)

twinturbos

Sergeant
Jan 1, 2019
285
74
0
Ride
E92 335i MT
Hey guys,
Looking to start using E30 mix on my single turbo 335 with the docrace 6266kit.
I have upgraded stage 2 fuel pump. I have been running the car @ 23psi with no issues spraying 50/50 watermeth. I was able to run @ 26psi but sometimes it pulls timing up top.
So the plan is to run E30 to get that problem solved however I believe I won't be running the same boost because I will be making more power with more timing from the E85.
Now my question is: What PSI should I be running at to have the same or more power as before safely with an E30mix ?