i bought a used emaxx without a system,thru in my vxl with 17 pinion,it hauls ace.
motor temp 160.esc 150.without fans..
i will post a video tonight,already have footage just have to edit.
top speed is comparable to a stock brushed emaxx/ a bit faster i think.
the torque is crazy....a mamba has got to be over kill for this truck.