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That's my point. Why have one if its wide open?
Its not doing anything at all wide open. It fully flows with no restictions and u mine as well just bypass it and use a junction only.
exactly my point, some do and some dont. I have gone 165 in a camaro witih NO prop valve and it never felt any different than my other car with a prop valve but only going 145mph. So I dont see why it really is needed
Its going to be better to have one and turn out not needing it then to not have one at all IMO. Unless you want to be that 1 guy that has problems with brake bias and could have resolved it with a $30 piece and has to run a new brake line.