I actually purchased 1 flash tuned pre run for the the actual day of qualifying due to having issues with my other engines.
All I can say it is well worth it
All I did was run a tank on the bench since it was cold it idled perfect went on to the track put a tune on it and ran my qualifiers
Thanks to distributor for being trackside or it would of been a bad week for me
Home of The U.S. World Nitro Cup
2014 Hosted Events Roar Paved Electric Nationals, IFMAR ISTC Worlds
2015 Roar Fuel On Road Nationals,U.S.World Nitro Cup Completed
2016 U.S. World Nitro Cup Dec 7th - Dec 11th