I was able to run this motor throughout the course of the weekend and the motor is very impressive. I have ran a whole wack of powerhouse modded motors and all of which have been great. This Arrow motor was definitely up there as it ran awesome all weekend. Like Mark said the temps were very cold as it was snowing for part of the weekend ( race was inside a large unheated building) and the carb remained untouched all weekend. The engine was a beast throughout the entire power band and turned many heads. After each qualifier, so around 6 minutes I had about a little under half a tank left. Yes there are many variables that contribute to fuel mileage, but i will say i am not easy on the trigger finger and the motor was running rich yet. So on a decent size track that doesn't require you to have the trigger glue all the time it will get respectable mileage. The only thing uncertain by me is the durability as the motor i ran had less than a gallon of fuel through it.