OK guys, this is where I am with my problem. I was talking to some guys that fly in Florida. They tell me that they fly in 98º temp with high humidity. They said when you have a problem with ramp up on high humidity days with high temp, most likely it's the fuel pump. So I took their advice and changed the fuel pump. I ran my P-80SE today, 84º and 24% humidity. Now I know it's not a lot of humidity, but I was also having a problem when the humidity was much lower. The max RPM I was able to reach was, 125,5000. To make sure it wasn't a fluke, I ren it 3 times. Each time i could get 125,500 rpm's.. That is from a complete shut down. Receiver and ECU unplugged from their batteries. I hope this helps. Will try again when the humidity is much higher....
Larry