problem solved! 8 dollars at the local car wash to clean the tank, replaced the fuel pump and filter, new fuel filter, and drained the line.
fired right up at 50psi. dyyyno time

 

my first thought, the injectors don't have the strength to open with the higher pressure.
your resistor box may be too much resistance or you may have gotten high impedance injectors by accident.
it may also be your ECU...

 

what is your fuel setup ? what size lines ? return?

 

we ohm'd out the injectors with the resister box on, 2.1 across the board. thought it was sort of low so we tested another new set and they ohm'd out the same so that checks out. (makes them low impedance correct?..anything under 5 ohms?) i thought it was faulty new injectors so swapped 1000cc is there (known working ones also) and still nothing.. ill try another ecu..

 

fuel setup as follows:
walbro 255hp
factory fuel/return lines
precision 780's low impedance
stock rail, tried aftermarket fpr and stock fpr

 

switching gas tanks and fuel pumps today. when i got the car it had a half tank of water in it, must have rusted etc leaving tons of gunk. cleaned it twice, must not have cleaned it enough. hoping this is it guys!