No butterfly injectors fork just fine Jim. I remember a few who have done it. Cree was the last one I think. Take your butterflies out and they will work too. If you think your engine will just run to explosion, think again. It can't rev or over rev without fuel... where does the fuel come from?. not the fuel pump, it comes from the barrel valve. You control fuel by the valve. Think about it. as you would adjust your idle screw opening up the butterflies what did you also do?
You opened the barrel valve too. So you control idle with the barrel valve and connect you throttle pedal cable to it......Granted it's not the smoothest but that's how it's done..Neil Thompson did it and so did Clifford Clark.
jd