About 570 CFM is all it will handle before it bucks and runs like Poop. (Turbo car, can answer about the NA engines)
Trust me on this one. I have been down that road.
Limit the secondary on the QJet so they only open 50° or maybe a little more.
See me right on the Gnttype page there is a picture of the screw I used to limit the secondary opening.