MMM vs MM with A123's.. Check this out boys :D

[MetalMan]

5s1p A123 is quite weak - 1000amps peak. Running 5s2p in my "slipperential" Revo (the one which lincpimp now owns) I would get 10-15mins with a 7XL and MM geared for ~45mph top. Since it was a custom conversion with the motor only slightly offset to the left side, I could easily run 2s2p next to the motor and 3s2p on the right side to achieve decent weight balance and CG.

[JERRY2KONE]

Knowing that the Fiego motors are not very efficient and tend to crate a great deal of heat maybe a motor upgrade would give you slightly better run times, not to mention better performance overall. just a thought....