11 second dart help

I should explain my thoughts on the converter. I have no problem with a somewhat inefficient TCI, B&M, or Jeg's style converter on a higher powered, mainly street car. It will still be fast enough to get you in a heap of trouble...:D

If you are more focused on track use, a modern designed, efficient, custom PTC, Dynamic, Ultimate, Turbo Action, etc, will make you much more consistent on the track and still be drivable on the street.