I just did this yesterday... so it's funny to me that this thread pops up
My fuel pressure has been high for awhile. I already had the resistor bypass mod done. Here are my before and after numbers.
11.23V Cold idle
10.76V Under boost
11.07V Hot idle
13.91V Cold idle
13.96V Under boost
13.95V Hot idle
Battery voltage: 14.09V
Obviously, the mod kept the fuel pump voltage very stable. Before it was done, voltage would DROP when it was needed most... under boost.
I ran 10AWG from the battery back to the pump. I thought about using 8AWG but went with 10 because Hosfelt didn't have 8AWG and they were VERY cheap. My install is VERY clean and I am quite satisfied with the results.
Fuel pressure is even higher now at around 50psi. Coming up next for me is an AFPR. On the plus side, my injectors flow more at 50psi... so I might even be able to go higer than 14psi of boost.
BTW, the Erik Gross method isn't the way to go... even he himself has stated high fuel pressure after doing it his way.
Vacuum reduction, Powdercoated misc, cruise relocate, Evo9 BOV, Custom catch cans, Russell fuel filter, SS braided fuel lines, High flow fuel loop, Autogage fuel gauge, Catless DP, DNP Y-pipe, Fuel pump hotwire.
FS/FT: 94 3000GT base $3k