Who runs what ? And what sort of power are you running ?
During mapping my uprated 023 intank pump started to run out of pressure higher up the revs. Unfortunatly unlike saphs and 3 doors with external pumps its harder to find a upgrade, so are use running an external pump inline to boost pressure or running a swirl pot.
Im planning intank to a swirl pot then two 044's from there to the rail, returning to the swirl pot then overflow back to tank.