I ran the blue for a while, but after the injectors I could pull it down to 3 psi. Not good. That was with 1/2 lines and a relocation kit too. My friend has a Walbro and it does really well. It's not much more after the pump and kit if yo go that way. If you do get the Holley get it from advanced or autozone, they have a 1 yr no questions warranty.