I used to run mamba max's all the time and i found the best motors were Team Orions, My 1st gen team orion 3.5 was amazing with it with zero cogging. I have tried an LRP with it before and it didnt like in sensoreless at all.
And If you manage to overheat a mamba max with a 4.5 then well...thats just weird :P, The thing can handle 12 Cells and iv'e run 7.4v 3.5 lipo before with it and the thing doesn't even break sweat.
These things are the Brick Sh**t House of ESC's
Stef