Originally Posted by
Laidback8g
Well the only reason I bought up the double pumper is because all my friends are using them in their evos and they were telling me in order to make the 5xx I would need a fuel system of that sort. I've been a bit hesitant and wanted to ditch the idea of the double pumper and going with a single 400 that I just found out about and it would be sufficie for my set up. I currently don't have a aftermarket fuel pressure regulator I was planning to keep it stock for unknown reasons. So with a single 255 on stock fuel pressure running 1000cc injectors I should be fine? I'm aiming for 550hp+ you think this would be enough on the 255?