how neccesary is a return line for a electric fuel pump?

perfacar said

hi, don't put a return line in, you will have pressure variations and starve motor.
just plumb it normal. it doesn't heat up the fuel .

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I agree,I tried a return line running a Holley blue pump.My car ran like crap(slower)so I removed the return line and all was back to normal(running high 10,s):)