You'd better check the pressure-flowrate profile. ( @! U2 O# R6 R/ C. B8 P
Moreover, you didn't say what kind of pump you used ( u& g* r+ [5 w+ o 8 h& _" C# S/ r8 _* ]. Zif for variable displacement pump or others ' k& Z, w5 X. q7 M& vOnce you change your device to 45cc then the deadhead pressure changes 2 S: E" I4 B/ u5 m: L/ E% o. i( f' O0 ?% T
cause more problem.