After spending the last couple of years on my turbo sled IMO track speed is everything so sometimes gearing down can work against you as the track ends up turning slower even though the engine is revving out. The more I think about it the more I think my goal for when I ride the Nytro is to get as much power as I can out of the stock motor and get the cluthing dead nuts all in order to maximize the track speed. For my wife on the other hand, well she doesn't drive pinned like ever so for her gearing down and using the bigger track would probably be the ticket.
M5
M5