7875 + 5.9 + E85 + Megasquirt

Thank you, I’ll give that one a try. The instructions that came with the brakes say they need to be bled off the car, but the orientation puts the bleeder right at the top where it should be so I didn’t understand why. I’ve bled my system 10 times and the pedal still feels spongy until I pump them a bit. Also running a proportioning valve.
My pedal was really spongy with this setup until I put the bigger discs on the front. Probably too big of a bore on the MC with the smaller discs I had on it previously.