I dont think that my hpop is low, I think(know) my engine oil pressure is low. I think my HPOP is fine. I just think that because the low pressure pump is not producing, or holding pressure like it should(due to unknown reason, but I did just replace the pump), its not keeping the HPOP resivior filled all the time on WOT runs. Therefore, the HPOP cant keep up with demands of the injectors because of something prohibiting the Engine oil pressure(or volume) from being high enough. Did I explain that correctly to you? I got confused typing it!