ok ive been havin issue with beeing lean ,had allen retune ,too make rich purposely ,it was for an hour ,then now its going lean again.i put a pressure gauge on sure enough its losing press.its dropping from 55 psi to 50 causing it to break down.i have an elec aeromotive fuel pump setup feeding off my stock tank,with 2 100 micron filters and a pump speed controlllerthat is supposed too at 3k kick it up to 58 psi..i was just trying to get some ideas were to start looking first.for losing pressure .would a dirty filter cause this?give me some ideas guys.it has been slowly proggressing for over a month.started just going lean then 1 night i really hammered her and its been worse since then,it started skipping mildly,then progresses to skipping and popping now .and obviously loss of power.i do keep getting po174.code.could be unrelated.thanks ahead guys.
o i have already changed plugs and wires.