If you can run a full pack HARD and not get the motor over 150*F then dont bother. But if your getting closer to 180* I would try it and see what you get ....
Maxx - FLM, MMM, CD Med.36x706s
Raja - FLM Ext. MM, 1512, 4s
SC8ight - MMM, 1520, 6s
D8T - MMM 1717 6s