Those of you that have experience with this unit, is it a worthwhile addition? I have recently changed to Cobra Classics, K&N, the Bean stock air box mod and rejetted. Unfortunatly the weather has taken a turn for the worse and I have not been able to thoroughly test the results of these mods. I was able to go for a short ride and did notice more back firing on deceleration that before the changes. I have a chance to pick up a used Dynatek and would appreciate the groups input.