MM is way too hot! Why?

[Xtremespeed]

I just got my Neu 1512 1.5d/f this week. Running it on 4s2p A123, 14/46 in a hyper8 pro. The new motor is making a lot of power, and staying very cool. Hasn't been over 110 yet. After running no more than 2 minutes around the living room I heard my MM reboot. Checked the temp and it was 271 It was getting very hot with my Feigao, and I was hoping it was the motor, as the Feigao was also running very hot (210). The Neu is running cool though, so now I'm a little stumped. Obviously I'm not running the car too hard in my living room. What am I missing? Is my MM done?