FiTech EFI system

Checked my fuel filters and they were clean as expected. The pre filter is a real nice 100 micron screen type. The post has a stone element. I don't like that type. I took it out. I have a real nice 40 micron Earl filter I put in it's place. I think it is a vent problem. I'll make sure the little can thingy in the trunk isn't clogged.