I was told the Super Victor and the 850 DP carb would be sluggish on the street. I assure you it is anything but sluggish! It is highly responsive and lays your ears back mighty quickly. What I cannot say is whether it is better or worse than the Air-Gap. But honestly, with how it runs now, I'm not much inclined to make a swap to find out. (Well, ok, nothing occurs now anyway...it's wintertime!!)