Vapor lock- additive?

eekvonzipper said

Would This solution bleed off half of your available pressure tho? it seems that just maybe your 5-6psi mechanical pump wouldn't be able to put 5 psi to your carb anymore w/ a return line.
Is This a thing?

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Not half. But it will bleed off some. That is, as long as you use a bypass regulator for the return orifice, OR use a fuel filter with a metered orifice return nipple. If you simply plumb in a straight return, then yeah, your fuel pressure will drop dramatically.