Yes, the under hood filter is the one with the screen, and again below. The screen is white on a new filter.
I'm not sure how long these cellulose filters will hold up. Both were approaching three years old, so age could have something to do with the drop in pressure.
To clarify, the pressure drop I experience when it's time to change filters is while under load. With a new / clean filter I will not see my fuel pressure gauge move from idle to WOT. When they're dirty / old I have seen up to a 5 psi drop under heavy load.
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