I just saw a wiring harness off an 500 EFI and it looks like there are two set of 4 injectors wired together. Do they fire 4 injectors at a time?

Here is regulator question . I know the regulator goes on the back side (from fuel pump to fuel rail to regulator) of the fuel rails. I am wondering if the regulator location is inportant. Does it need to be mounted close to the rails or can it be mounted about 1.5-2" away?

the closer you mount it, the faster the pressure changes will happen in the rails but 1 to 2 inches would present no problem at all. Many manufacturers in the cr world are tank mounting the regulator these days.

OK, I miss typed. I should have typed 1 - 2 FEET away, not inches.

I talked to Aremotive today & they said being that far away would be OK, but would rather see it closer