it does prime.. if I turn the key on.. wait 5 seconds for the pump to shut off.. key off.. back on, wait 5 more seconds.. .off.. on.. then start...it starts easier... when I had the tablet on watching the fuel pressure I noticed it bleeds off quickly.. I'm just assuming that if it held pressure I wouldnt be having the start issue with waiting. I'm in maine.. its 20 degrees this morning and it'll be 65 in 4 hours... this whole upgrade was centered around easy starts no matter what the weather.... I see they sell tanks set up for efi.. I originally didn't go that route because it said 70 plus psi and the efi was saying 58.... I'm wondering if the bleed off is the sump kit.. or the efi itself...