Installed dual 450s the other day went to start the car ran for 1 second and died logged on jb4 lpfp psi and it ready like 5 psi. Changed ekpm2 to a ekpm3 that I knew worked good on my last car with this setup. Checked fuse, swapped relay. Not sure what else to hit me with some suggestions. Pumps work because I hard wired it and my car ran for 5 seconds with the fuel pressure it built up.