I already have a Fass 95/150 on my truck and I bought another one that I'm going to run off a sump. I'm looking for ways to do this properly. I want to feed the CP3's seperatly and I also thought having the ability to shut one off for street use would be a plus. My thoughts are to leave the stock fuel lines for the one cp3 and run new lines up for the other one. Do I need to put another fuel cooler in? I'm also looking for ideas on how to plumb the fuel lines once I get them to the motor. I'm kind of thinking I should have bought just one big pump and went with that.
I dont think you would want to turn off one pump if you run them seperate. It needs fuel to it or you would burn up the cp3 as they are cooled with fuel.
IIRC Fass pumps are 1/2" out so you would run either SS or alluminum tubing or simply just run a hose from the fass to the cp3
then run you return line seperate or T it to the stock return line
If you T it then you wouldnt need to use another fuel cooler
Personally I dont like this approach....but its not my truck
If you are worried about not having enough fuel I would just T it at the at the fuel tank and run one line to and from kinda like what trent did
I would probably use a check valve on one of the pumps but depending on the pump you might not need to use it
you could rig it up on a manual switch or a hobbs switch to come on with boost
the stock fuel line is 12mm slightly smaller than half inch so you will have pressure but its volume you want IMO......if you keep the hose or pipe bigger then you get the best of both worlds
I run 3/4" tubing from my fuel cell to as close as i could get to the cp3s and then into each cp3 with a 3/8s hose
return line is 1/2"( stock is not even 3/8s" ) to a Mike L cooler into the cell
Good luck
