I cant give you a number mate, I dont use mine as a daily, at a guess i'd say add 20-30% and you be close, I guestimated mine is drinking around 6L/min at full boost, just on that point I think most poeple are running out of flow from just one pump, upping the pressure only reduces flow, 1 044 only flows 5L/min at best, then add some hefty rail pressure and it might manage 4L/min, I'm thinking just throwing huge injectors at the problem wont fix the issue's people are having.