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After changing my fuel filters (dahl 100, and post pump spin on) I have had intermittent sputtering. It only happens at WOT. It lasts for a few seconds and sometimes happens 2-3 times on a single WOT run. I initially thought air was in the system (which may be the case) however I have put around 700 miles on the truck since I changed out the filters, so I don't think that is the case?
I have run this setup for years and just changed the filters during maintenance. Truck never had this problem before. I have a fuel pressure gauge and it holds steady at 62 psi.
Could air still be in the system? I do have a fuel bowl delete and regulated return.