vht

I'm going to hook up a frame mount Walbro pump as a secondary pump. It'll come on at a certain boost level. I was planning on a 1/2 in fuel line and a 1/2 in return. Do you have to do anything other than Y in the 2nd pump? It would seem you would have a problem with fuel wanting to back up when the second pump wasn't running. I would think a 1 way valve would create a restriction, so what is the best way? My main pump will be a frame mount aeromotive.