The centerfire (the Lynx) requires 14 cubic feet per hour oxygen (6.6 LPM) to run a top end flame (the kind that could make a 2" boro marble). This would be at about 12 psi, or thereabouts. I run a Phantom with the centerfire hooked up to an Integra10 (10 LPM at 9 psi), and it runs the centerfire at about 90% (it has more than enough flow, but falls just shy of the pressure needed for the very top end - but I'm very happy with the 90%).
With the centerfire and outerfire of the Mirage both running together, it takes 50 cubic feet per hour (23.59 LPM). A Mirage can run around 20-25 psi, but GTT recommends 30-40 psi (to compensate for long lines, etc.). There are generators out there that will run it. The Onsite Pro8 is one that comes to mind. They have a Pro4, but I don't know how it would do with a Mirage.
Hope this helps.
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