I just got the new AEM EMS and was wondering if the stock fuel pump can keep up with the demands of my EMS. Right now I'm using the stock fuel pump with 310cc injectors per Greddy. Should I buy an upgraded fuel pump and if so which one? I don't think I need a really high flow unit but just one that flows more than stock. What about an adjustable FPR? Should I invest in one of those too? My EMS is going to be installed and tuned tomorrow. Oh yeah my car is a 99 civic si.

 

You got EMS and you havn't up your fuel system and plumbing? I run 720cc injectors, holly fuel pump, Earl fuel lines, AEM regulator, SX fuel filter, STR rail, and of coarse the EMS.