Yep, that's a good way to do it. I just did it "the other way" and am content.
AirDog and FASS is this way no one seems to have any issues with the LP pulling from the tank, pushing so to speak thru the water separator filter first then the fuel filter on to the engine.
Except for FASS is now thru the fuel filter then water separator filter on to the engine.
Dan 2007.5 GMC Sierra 3500 SRW L.B."BLACK"C.C. 4X4 LMMZ71 DIY stock airbox mod, aFe ProGuard 7, OEM drop-in
EFILive ECM ATP - Heavy Tow Tune with Turbo Brake.
EFILive TCM Duramax Tuner
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FWS filters are the most efficient at water removal when the fuel is pulled thru.
This is how the Dmax stock filter is set up, pulling the fuel thru.
And this ^ is why, when you add a Lift Pump for positive pressure forward to the CP3, you should also add an aux FWS filter pre-pump to the mix.
Pushing thru post pump would atomize any water in the fuel as it gets churned up in the pump. Because of this, IMO the in-tank Fleece is a total failure as a mod for our HDs.
Emulsifying your fuel pre FWS is not the way to go for water protection.
All filter mfrs state this about their products, nothing new here.
Use-ta Haves 2006-6.0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab I Live my life in such a way that when my feet hit the floor in the morning...Satan shudders & says "Oh shit, he's awake!"