You'd better check the pressure-flowrate profile. 9 D7 i3 C" k3 v: F( ^+ iMoreover, you didn't say what kind of pump you used, V9 P& B L! t' D& z7 W. s
$ o! F1 _* g) p/ g! y
if for variable displacement pump or others) s2 \* Q2 D: s# B
Once you change your device to 45cc then the deadhead pressure changes $ Z/ X) K% U7 u# _" o" l) Q5 G( V' |% |4 S
cause more problem.