Fuel pressure dropping while driving and under acceleration to zero at idle runs 4 lb electric Blue

Yeah I'm not sure. It was kind of frustrating to be driving along, beautiful and running great and then come up to a stop and start bucking and you know wanting to die and everything and have to pull over but it did that before I went to an electric fuel pump. I haven't really had a chance to drive it much with electric fuel pump to see if it fixed the problem or not because of the fuel pressure issue that I started noticing.