Been having some inconsistency in my tune as of late. Changed out fuel filter last night and this new problem reared its ugly head. I hooked up my pressure gauge to check pressure and the gauge is literally pulsating. I can feel it in my hand. Needle is bouncing around like crazy.

Ive been having fuel inconsistencies for awhile now. fuel pump is new. Im wondering if the regulator is going bad ? Anyone ever run into this before ?

This is a miniram with the tpis regulator.

Thanks for any help.

Tim