Ah, that's traction control only, not ABS. About the same thing as Joe is running with his MS stuff.
MaxxECU doesn't do ABS. And I don't believe ABS would be very effective with 5 pulses using the wheel studs even if it did. Certainly not with only one pulse.
Not saying wheel speed sensors are insurmountable, but a setup for ABS isn't going to be as easy as welding the end of a screwdriver to a hub. At the very least, I expect for the front it will result in machining a step into the back of a hub and pressing a tone ring onto it and then mounting the sensor off a bracket. The rear could be easy if an 8.8 with ABS tone rings is used.
@GoodysGotaCuda used the fins inside the brake rotor to run TC. That would have a lot better resolution than the 5 studs, but I wonder though if deflection while cornering would cause issues. I know that one reason guys with S50's swap to the Mach1 knuckle is because the candlestick spindle has enough deflection that they have ABS issues and the much more rigid mach1 knuckle and hub solves that. And those S550 candlestick spindles have the tone ring down at the wheel bearing while the rotor is much further out and probably moves around even more.
It's the whole reason I started my fabricated spindle project. So I could use a hub that has an integrated tone ring. Initially, I just wanted one that I could feed the ABS module so it could register the vehicle speed, but if I am doing one why not do them all and have functioning ABS? Shouldn't need anything but the ABS module and a yaw sensor, at least in theory. I know the S197 ABS doesn't need more than that, nor does the BMW system people retrofit.