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

67Dart273 said
Can you back this up with any facts?

"pressure variation." ?really?
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pettybludart said
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):)
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that just proves your holley blue wasn't up to the job .