You'd better check the pressure-flowrate profile. ' D+ C8 p* K# i
Moreover, you didn't say what kind of pump you used 9 S: j) p0 u) k2 _9 u& l* I+ r8 ^0 U3 B; ?/ T0 v
if for variable displacement pump or others $ h1 H# r8 N* _7 Z- jOnce you change your device to 45cc then the deadhead pressure changes% r4 E- V; d: Q; b a& i
' |- u; f+ ]* o. Y
cause more problem.