Went on the Dyno today, basic 5.7L

Did to just log a pull with the filter off the pipe to make sure it's really the Filter and not something else?
Not saying it isn't but it would be a quick and simple test. I did the same test 15 years ago on my 74 Duster(360 magnum, M1 single plane, Holley MPI). The simple test showed the Stock dual snorkel was more the issue than the Fram paper filter.