Base fuel pressure way too high!

[sike]

I just installed a turbo kit on my GS not too long ago and I just got around to installing the fuel pressure gauge. The base pressure is almost 90psi, which sounds outrageous from what I've been reading.
I'm running the Vortech SFMU, and when I adjust it, the pressure does not change at all. What is the deal here?

 

[Knoob]

could it be reading wrong by any chance?

cause i cannot think of one sensible reason for it to do this.

 

[Doug99RS]

Most of the turbo kits I've heard of use either replacement or additional fuel pumps as well as different fuel pressure regulators. I would recomend checking in the 420A-gone-turbo forums for assistance in this matter. They're going to have more experience than most people in this area of the forum (including myself).
Doug

 

[sike]

I don't understand how it could be reading wrong, but it could be. The pressure gauge only goes up to 100, which from what I know should go higher. When I shut off the engine the reading stayed at 90. I had it off for a good 20 minutes, maybe more. The first time I shut it off it dropped to 40 after about a half hour. I don't know what the deal is. I don't understand how the SFMU could be not working right.