My second mamba xl smoked. Was bran new, didnt make 2 metters with the car.

First time i connected it was ok, so i disconected went outside to test it and nothing but smoke...
First MXL is got bec pro on it to and it is working ok, my temp are 99°C after 15 min of driving..dont kow why this hight temps as if i drive under 15 min temperature is up to 80°C. After 15 min of driving goes above 90 up to 99°C.
Any advice?
Will be sending second mxl to castle for repairs. As i am from EU this will take some time.
Here a bad pic "sorry".