Quote:
Originally Posted by JFM-jr
From what I was told and the way I understand it it's exactly as you describe. It moves the starting and ending points of the stroke in closer towards the body of the pump. The theory is this area of stroke moves more fuel than the stock area of stroke without the cap. Again unproven without supporting data.
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It's potentially true. But it's just as possible to not do anything to help flow.
Would be nice to see this answered one way or the other. It's pretty simple and should be repeatable.