Thanks for the info. I am hoping to make around 700 with mine. Don’t know if I will hit my goal or not but I hope to find out next year. Lol I will be runing mine at 58 PSI fuel pressure and I hope on E85.
You could always run multiple pumps in parallel to prevent fuel pressure lag when hitting boost. Or run a much larger pump. Using E85 alone will require a bigger pump capable of handling 30% more flow and maintain the set pressure. The fuel pressure has to also progressively increase as boost increases @ a 1:1 ratio, making it more of a load on the pump. Bigger is always better in this case