[jhautz]

I don't think it would add more power to the motor, but it will for sure help keep temps down. I did a little test of the MM internal BEC on 3s (which is within the limits according to the specs) and the bec components heated up to 180 degrees in a matter of just a couple minutes (and this is with virtually no load on them running just a 25mm 5v fan.) No matter what voltage you run the BEC will generate some kind of heat so it certainly will not hurt the esc to remove that heat source.