I’ve had my fuel boss on for years. No issues other then replacing dried out cracked rubber fuel lines over time.

 

I want to delete my oem fuel filter and run a frame mounted setup like GDP’s stand alone filter w/ heater. By using a FS19596 filter I can have a connection for the oem wif sensor.

 

I also want to delete the oem electric lift pump. Has anyone here bypassed the stock lift pump and ran straight mechanical? And if so how did you plumb it?

 

Im thinking 3/8” line from tank to filter, then to mech. pump then to VP44. But I need to regulate the pressure with the bypass valve so should I tee it from the return side up to the vp? The return goes back to tank with that filler neck fitting.

 

Thoughts?

Edited November 26, 2024Nov 26 by Mace

Personal opinion.

 

Not fond of this pump. No pump is made to suck fluids long distances. All pumps are designed to push fuel not pull long distance. Then without a electric pump if you lose prime there is no way to start the truck. Most have to remove the belt and pump and spin the shaft with a drill.

 

This is why aftermarket stock went into the fuel tank less distance to suck the fuel. Even AirDog and FASS both suggest close as possible to the fuel tank. Now DDRP pumps are junk too because of crappy plumbing and still the distance makes stress for the pumps.

 

~450k miles on my AirDog and replace 2 heads. Bonus is the fuel polishing because AirDog make many passes through the filter 3 micron then also kept factory filter as well and do 60k to 70k filter change. This is due to lower fuel temps <130°F typically.

Edited December 3, 2024Dec 3 by Mopar1973Man

On 11/25/2024 at 7:44 PM, Mace said:

Im thinking 3/8” line from tank to filter, then to mech. pump then to VP44

 

You definitely need a fuel filter between the mechanical pump and the VP44.  I believe that the last component before entering the VP44 should be a fuel filter, regardless of which fuel supply system is being used.

 

- John

2 minutes ago, Tractorman said:

 

You definitely need a fuel filter between the mechanical pump and the VP44.  I believe that the last component before entering the VP44 should be a fuel filter, regardless of which fuel supply system is being used.

 

- John

1/2 is more pressure stable than 3/8 inch line. Remember stock is 6mm ID smaller than 1/4 inch. Smaller line tend to have more pressure drop that larger lines.

I really like that Fleece in tank powerflo pump setup. Pricey though

 

 

 

 

 

 

 

 

 

Here’s another idea:

 

I’m looking at an Air Dog 100 5G for simplicity. I like how their kit uses the ecm lift pump connector for its relay trigger. I suppose I could use a relay with a diode suppressor to protect the ecm.

 

So it’s either a dedicated draw straw or a tank sump to supply fuel to the AD. I see on AD’s website they have a plastic 3/8”connector to 1/2” barb fitting. Could I use the oem 3/8” fuel module supply port to fuel the AD? It would be cleaner, I already have a draw straw in the tank for the Webasto.

 

Edit: Nevermind, their kit does draw from the oem module supply fitting.

 

 

Edited December 5, 2024Dec 5 by Mace