Maximum EV Increments for Bracketing ?

[enlightened]

Hi, I have a Canon 6D which I use to photograph properties and am thinking of installing Magic Lantern.
My 6D can shoot 2 Bracketed photos but the 2nd photo has a maximum EV Increment of either (+3) or (-3) stops.
Is it possible to exceed the maximum increments of my camera to say (+5) or (-5) ?
Thanks for your help.
Darren