Congrats Dimitri !
I had to laugh at the pressurizing the tank idea! Although it would work with some rigging, I pictures the next post to be " WTB 1350' air hose " lol
it would work on a dyno of you made sure you vent was sealed and tank was full,however it wouldn't fix the actual problom!
You have 2 issues- not enough volume and not enough pressure
I have talked to a few people now that build and work on these pumps and they truly believe you need more pressure to help the cp3 this is called precharge and anyone that works with pumps undertands this. It is not just with cp3 but any type of fluid pump
normally 30 psi is recomemded with correct suction lines to the pump.... Fluid dynics play a role I'm this (Eg: sweeps instead of 90s, distances, line size , density, temp)
However rob and tim hit the nail when they said increase the press! What this does essentialy is increase volume.
Take a pop bottle and poke a hole in the cap, the harder you squeeze the more volume that comes out
people are hesitant to belive that line size has lil effect, IMO the shortest distance of recovery the better but that s jmo
if you have 10 psi of 3/4 line and pumping into a 3/8 line and the distance is 10' or 10" what 3/8s line would fill faster?
I run basically a 3/4 line from the back of the truck se say overkill and laugh I say " no such thing"
people may argue with that but I don't have supply issues