Fuel pump upgrades

[Hzaza]

Has anyone here upgraded their HP/LP fuel pumps? How do you like it and is it worth it? Would upgraded pumps get rid of the need for a CPI if running E85? Any help is appreciated

 

[Terry@BMS]

The low pressure pump isn't a limiting factor so pointless to upgrade, unless doing large turbos.

The high pressure pump upgrades I've seen (so far) have not really worked. CPI remains the best alterantive to WMI for getting around the fueling limits.

 

[General_Vodka]

Has anyone here upgraded their HP/LP fuel pumps? How do you like it and is it worth it? Would upgraded pumps get rid of the need for a CPI if running E85? Any help is appreciated

Best you can run without any issues with both fuel pumps upgraded is around e40 ish. The fuel injectors themselves are more of a limiting factor. I think WMI is a better investment since you can also run that in combo with e30 on stock pumps.