I’ve changed the fuel filter like 3 years ago, no to the pump. Fuel pressure seems a little low but barely, not seemingly enough to cause this issue. I mean when I rev it it’ll go up past 30 psi on the rail and stay there. So I don’t understand how that would be the problem. Haynes says 30 psi min. I’ve seen 30-40 psi on several threads for my engine, seen others with like 28 psi than ran fine. Fuel injectors can be opened for longer to account for the minimal pressure differential by the pcm.