That I don't know yet in driveway at 9 pm at night lol. I will have to run it more to know with timing light on it. Need a helper gets kind of annoying doing some of this solo. I know one thing cold blooded happy once 135 to 150 degrees. I have not touched the choke though at all and I'm sure it may need to be more open I'm guessing. No bad noises that I'm happy about got an hour run time now. I really wanna pull the oil filter off check my investment. Builder said to let that break in oil run for 500 miles. Then change oil.