I'll post a pic and run down of my Kinsler stack injection in the morning. I would have thought in principle the same as toilet. Hi speed is to bleed off fuel as your rpm increases other wise you will run too rich. It provides control of the fuel curve.

Peter. Australian Charger, alloy block injected 410in, w9 na 9.03@148 leafs 3000lb

1967 barracuda 605 hemi Stage5 millennium 8.2@170