It was raining yesterday so it will be next weekend at the earliest before I try any more speed runs. I need to get to the LHS and pick up a 21t and 23t pinion. I am also going to play with the trottle curve and a couple of other Mamba Settings, Swap the front tires to a smaller set, and play with my ride height. Then I will need to find a longer street.[8D] I would guess that the IB4200 pack will put me right aroun 35-38 mph which is great for dirt/track. With my bashing gearing 14/86 and the 3s lipo I was at 48mph. I will keep you posted when I get more results.