With mine anything over 220 and it starts smoking and just shuts off. But it preforms best for me at about 210. Also what fuel are you using. I found with Trinity Monster Fuel. I need to run at about 3 1/4 - 4 turns out. But when I use Eliminator or Traxxas Top Fuel, it runs about about 2 1/5. But thats because of the oil difference in the fuel.