I was able to pick up an R32 gtr recently and it has developed a fueling issue. There is a hard start condition and misfire at WOT. It also does not have fuel PSI at the gauge on the regulator with key on engine off condition as well the fuel pressure bleeds of instantly once the engine is turned off. Just being a 33 yr old car I upgraded the fuel pump, FPR, replaced the fuel filter, and dropped the tank and replaced all the vent lines. After doing these repairs the condition remains. Any help in diagnosing is appreciated.