You'd better check the pressure-flowrate profile. : r, | z( ^$ S. b g$ v
Moreover, you didn't say what kind of pump you used : [0 i8 N. q6 U( c/ x9 o" E0 N( ^ 8 V8 j7 W- J! \+ o1 o4 l/ qif for variable displacement pump or others: d7 @7 m" D- G5 ?
Once you change your device to 45cc then the deadhead pressure changes0 j) p0 C+ j1 [5 ~4 Y