The main reason for running an electric pump is to gain HP, the mech ones obviously rob power from the engine, if your only running the car on the street there is little advantage apart from they look cool, and as 1968formulas340 says, your next post may well be "why's my car running hot?"
I'm struggling with my CSR, if your running low comp and iron heads you may be ok, high comp and ally heads doesnt seem to be a good recipe in my humble experience.
