When i was running the stock filter housing with my fass 100gph i was only getting 16 psi at idle and 11 at wot confirmed by two seperate fp guages, one at the fass and inbetween the filter housing and my bigline kit from the filter housing to the vp even with a snubber and needle valve to make sure i had no fluctuation. I removed the housing and plumbed it to the vp straight and ive been getting 18 psi idle and 15 wot with 125hp injectors and edge juice on 5x5 for testing. I know i had no problems at all with gelling in the winter at -40°C where i am, plus my fp didnt increase in the winter at all so i wasnt too worried about it. Started up within half a second even in the winter but keep in mind i ran fuel stabilizer/anti gel where i am. I know the vp's healthy since the po had a ddrp on it at 20 psi idle and 14 wot when i bought the truck, but i appreciate the information! I know i ran the fuel filter housing and fass together and my fuel filter was completelt clean when i tore it apart after 30,000 kms after the fass so im not crazy worried but if i see any changes ill definitely add it back! Thats with a sump too so i definitely already sucked up all the junk n the bottom of the tank since i forgot to flush it after i drilled the hole #brainfart haha.
Also, update on the fuel in the oil, turns out when i installed the injectors, my old connector tubes didnt seat properly into the injectors and blew fuel past the orings on the injectors into the oil so i ended up just replacing the old connector tubes, new orings on them, new orings on the injector bodies and new copper washers from cummins, and i noticed the truck runs 10x better now than before the injectors. Im guessing something was wrong with the old tubes since my engine used to have almost like a fuel knock that only the driver could hear, but me being worried just figured the engine was tired. But since i changed the tubes and injectors, instead of just the injectors (the old ones were toast and i was quoted $950 for new bosch stock nozzles or i could get new 125hp full injectors for $900 from dfi so you can guess which one i took haha) the knock has upped and dissapeared, which made me very ecstatic as you can imagine haha