Yeah, mine is just a bit over 10 to 1. No detonation today though. I was quite impressed. It ran like it does in 60 degree weather.
By the way, while we do get some hot weather, the norm is between 19-22 days of 100 degrees or warmer per year. While it seems of little comfort, the humidity is a lot less though, rarely going over 35% when it is hot.
I only mention humidity because I have been eyeballin the weather in Texas and Tennessee since I am still looking to move out of this state someday. I wanted to visit Tennessee this late Summer to actually feel the worst of their weather to see if it is something that I can deal with. I may be over-thinking that though. For example, if I am compelled to stay inside here when it is 110 and dry, that is really no different than being in Knoxville and staying indoors when it is 95 degrees and 80 % humidity.