FAB Braking system?

[SOSx]

So I've been looking around the forum, Schumacher website and petit rc and I can find very little information on it's performance use or setup.

As far as I can tell from looking at the team drivers setups, none of them use it!
There is not even anywhere on the setup sheet for the fitting or settings to be recorded?

Is this due to a performance issue?

Now I have recently bought a k1 in very good condition along with a FAB system still in the bag and am wondering whether to fit it or not?

Any feedback or setup guidance would be appreciated as the lack off it makes me dubious.