The way my oil pressure gauge is plumbed in, the the standard t piece has another t piece screwed into it, with the pressure gauge coming of the T, and the turbo oil feed coming off the end.

Now, as my turbo seals started to go, the oil pressure started to drop. After putting in new seals, the pressure has risen. I cant help thinking that the gauge is reading lower than the pressure to the bearings - as some is being bled off through the turbo?