Originally Posted by Jaz240

Everyones answer is right. All engines are different but try not to exceed 275. Tune for smoke trail and performance not temps but always check to make sure it's not too hot. There is a very narrow gap between a perfect tune and too hot or to cold. Cold will hurt your engine just as fast as heat will so make sure you are in that golden range of 200-250 after a good 1/2 tank of running in normal conditions. I know RB engines like to run a little hotter than others and the trinity ex techs run a little colder. Of course if I could tune as well as I can type my life would be allot simpler