I was getting almost 12 minutes a tank with my Arrow at the ROAR Nats. After a 9 min practice heat, I had almost 1/4 of a tank left. I used a Mugen pipe with the 6.5mm reducer in my Agama A8. My tank was way undersize but the cylinder was not marked so I don't know by how much. Engine ran perfect and temped between 230-260'F.