XRAY - Model racing cars

Hello. In our race club we race with the same configuration as ETS. In carpet we race with Ride 34 and 5.0 ratio, motor muchmore 13.5 and Muchmore Euro blinky speed control.
The last races my car was very fast, but at the last one I update the software of the speed control and the programm car from 1.10 to the 1.30. Power lever function up from 9 to 12, but my car had a lose a lot of powerfull... and I don't know why. I reset the basic program in radio (neutral, full throttle, full brake), but no idea

Can anyone tell me something about this? Thank you very much.

Hello everybody.

I found the solution. When you change the firmware, you must check the parameter default reset to Yes in the program card. Automatically the car was again faster.