09-09-2012, 02:51 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
It's not really necessary, but since you can control the amount of vacuum that the pump pulls, it's nice to have. If you don't let it pull any, it's essentially like a breather setup.
It was recommended by Peterson.
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