I'm referring to stock return line, running e85. I know everyone is saying the 340 pumps require modification because of idle pressure. But I was curious on the Dw 300. Leaning towards double pumper setup but I like to research my options, that and the cost of a double.
42 lbs injectors are a great first step upgrade and will flow down into 11's. I would recommend having upgraded the factory underpowered fuel pump, and add adjustable pressure regulator.