Guys, after going to the dyno the other week. I've found out that I don't have enough fuel pump. I remember there's a really good write up somewhere on swapping to a Walbro 255 that I'm going to search for later. I was also curious on what changes I would have to make (I'm in a return-style fuel system truck) to use a flex fuel pump. I think either one of them would give me enough fuel, but I don't know how much work each of them would be.

Suggestions or experiences?