Please answer me question

Hi

I see some releases for systems called energy system and custom system .. can someone helpfully explain to me what are those systems? i have custom armors the boxing and football armors do so do they apply to the custom system? please explain it in an easy and clear way :)

the energy system has nothing to do with the custom system.. the energy system gives you specialbonus for 2 hours for example. thats all i know :D

i need to know what is the custom system and what is the energy system, their functionality, how do they work, etc..