I'm often asked what relevance does the Universal Torus have with Active Kundalini?

I would say they are one and the same thing.

You don't really feel the Torus until the soul starts to liberate itself from fragmentation in the ego. After which, you realign to becoming the mainstream of soul, which happens at Gateway 2 in the 5Gateways route-map. Now the soul starts to flow within you and you are progressively becoming that flow. It will have many blockages to work through on the journey to full kundalini activation (which happens at Gateway 3). Once this happens, kundalini activation fully unleashes the Toroidal Flow (although karma now needs to be worked with too... Gateway 4). Progressively you are unleashing this Toroidal Flow through activating kundalini. It now creates freely from the source through you and out into your life.