The low pressure output from the hydroboost would go back to the PS resevoir. It only flows when you're braking. The high pressure output line which goes to the power steering gear box could be T tapped into the same line, but I'm wondering if it would be better served to run it through before heading back to the PS resevoir.
I also am wondering if slightly restricting the high pressure return would be beneficial to prevent starving the hydroboost of fluid under hard braking. Just a thought.
