Either use the no overheating hack or follow the side-quest he gives you.
That way, you don't need to permanently disable any of them.
in order to disable augs in order to stop overheating problem if you are ;using the mankind divided setup for you controller go into the augment screen and if you are using the Xbox controller you use the "Y" key, doing the quest for kollher later in the game will re-enable all disabled augments.
there are 2 times you can get the calibrator. during your first trip to go to you work place, at the under ground casino or during the bank job. if you don't get it during the first trip it gets destroyed and you must get it at the bank. then you wil get a message from kollher about a meeting later in game.