mmm and a bec

[e-mike]

i buy a used mmm and the previous guy run the esc with a external bec(cc)the mmm run great hand powerfull so far..now i would like to remove the external bec i dont need anyway.....if the esc run without issue from the out of the box to now..its seem that the esc past the TEST( 3,5 hours of hard running)with a external bec....im just scared to remove the becany idea???