So I'm looking at an older log of mine. At about 200kpa or 15 psi during a 3rd gear sweep from 2k to redline I am commanding between 80-90 psi and actual low pressure fuel matches that. Fomo, I don't think you are getting 110 psi because you are commanding that but rather because when you are WOT and then lift, the throttle closes and there is no longer a high demand for fuel and the system dead heads. No where for the pressure to go and it spikes.....My log show low pressure fuel at about 108 when I lift at the end of the WOT
Also on WOT upshifts, right at the shift when the RPM's are falling it looks like there will be a brief pressure spike in the low fuel pressure...Must be because the HPFP is not eating the incoming fuel from the low pressure lines because engine RPM's are falling