Originally Posted by gbbmk

I am finishing up my turbo build and bought and inline walbro 255. I installed it after the stock pump and wired it into the "grey" relay wire and it does not power up. The pump is working because if i plumb straight to the battery its fine. So how the heck do i power this thing Because as if now anything after 2psi of boost and i start leaning out.

Also do i need a regulator after the inline pump. I am on a returnless set up, for now