has anyone tried running a fuel supply line directly to the IP, bypassing all of the lines and filter on the engine? if so how do you route the return line from the injectors?

 

Not 100% sure what you mean. Are you referring to replacing the steel lines with hose all the way back?
I pulled the banjo and all the metal lines off my truck and relocated the filter to a racor 490R (on the suction side) under the bed. All done with hydraulic hose, but good quality USCG marine hose is even better.
Call up vulcan performance and he can help you with the fittings and adapters. I had him drill and tap an elbow that sits at the IP and lets me route a hose to my fuel pressure sender. The injector return just goes into the main return line and I blocked off the heater/strainer.
Racor makes a strainer that resembles a filter head. I might get one of those to capture any small particles, just in case. Otherwise any filter thats up to the flow rate and pressure / vacuum should be ok.
Just make really sure you have filtering in there somewhere. The closer to the IP the better.

 

i put a fass pump w/out filters then put a 2 micron filter after that on the frame just ahead of the fuel tank, and made my own pickup tube in the tank out of 3/8 steel brake line then used the steel line to plumb everything up to the engine, then ran the 3/8 feed straight to the IP with a T-fitting for my press. gauge,
i never saw that the injector return ran into the original filter housing, i just assumed it was the same is my 1st. gen. so i have had a slight leak and a starting problem the past few days, but just figured it out... took a 8mm nut and brassed a fitting on to it which i was able to connect to the original banjo fitting on the injector return and teed that in to the return to tank, so we will see how that works out.
thanks for the responce

 

Don't forget the IP return.

A 3/16" compression fitting will take care of the injector return. 5/16" hose will slide right over the IP return. Tee them off from there and the tank will accept a 5/16" line. I dropped my tank anyway so I don't if you can get the return line to work easily.

Are you installing aftermarket fuel system? I bypassed mine for the Airdog. It wasn't hard to do. Removing the lift pump and fuel filter housings frees up a lot of space on that side of the engine. If you are moving the stock components don't forget a block plate for stock lift pump hole.