Fuel pressure dropping while driving and under acceleration to zero at idle runs 4 lb electric Blue

Did you gut all the parts out of the Holley regulator? Spring, check ball, and seat? If not it IS doing some regulating.

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I did not. I thought about that. I was just hoping that by making it all the way open that it would be good enough to use as a tea but I can do that if it'll help with my issue