I have always thought it would be better to spray a mist of fuel rather than droplets of solid fuel. The spray atomizes much faster and burning most of the fuel instead of it going out the tail pipe unburned. The problem seems to be that when running annular boosters, you need a large venture for the that booster to work well, like what you find in a Dominator. I have been hearing there may be some new tech in the annular booster for the 4150. Thought i would post to see what any of you have heard or experienced with this. I already have a pair of down leg custom 850's for the Hemi, but would like to try annular booster instead.