Well, I just helped a friend install a big line kit on his truck, which is almost the exact same as mine, edge juice untapped, Fuel pressure 12 psi at idle ,10WOT, are these numbers to low for a 1/2'' fuel line, and will they drop alot more when the wire is tapped? Also the T for the fuel pressure is located between the VP and filter.

 

Check out the thread:
https://www.dieseltruckresource.com/...d.php?t=117975

 

I agree! Check out the thread above...

 

I can't pull my fp down to 12 with the vulcan kit. It supports plenty of power and the bigger lines helps keep the fp from dropping. The only problem I have had was the lp started going south after 10 months and I had to get a warrenty replacement. Good news is the replacement pump is even stronger than the old one and I sit at 15 while cruising

 

I've seen all kinds of different pressure in regards to the LP pumps created by Carter. Some are better than others but they all fail at one point or another... Sad but true...

I still look at the cost of replacement... It's still cheap for a campaign pump than a stock OEM pump...