Cant Adjust Fuel Pressure

[JamusAWD]

Hey Guys
I have a walbro 255 Hi Pressure, and an Aeromotive FPR (1:1) installed on my car.
As of late, i have noticed that ive had to constatly richen up my fuel trims in the higher RPMS.
Finally getting fed up with it, i figured i would raise my pressure from 36 to 40 and work from there. When i went to adjust it i noticed that it was stuck at 38 psi. Vacuum line connected or not it doesn't move. I have tried a different gauge and its the same.
I have also swapped the regulator for the same one off a friend and the problem presists.

I assumed it could be a clog in the system so i ran a new line straight from the pump all the way to a new high flow filter (-6AN line).
on completion of this, the pressure dropped even more now closer to 28 (vacuum line on or off).

The pump is fairly new, installed in june. Any other things i can test? Thanks for the help

 

[tbTalonES94]

I have the same problem except my fuel pressure is stuck at about 58 psi! I can't lower it or raise it. Also my fuel trims dont move and my 02 trims drop to 0 unless i WOT, which then they go to 100 and stay. Someone help us out?

 

[DBR01]

yeh, I noticed when I installed the OBX FPR on my 2G that it would only go as high as 30psi and I need it at 44 psi. swapped gauges.....changed lines to -6an and still nothing.....also think it may be a clog....ordered a new filter.....anyone have and fix this problem yet?????