I replaced all 4 wheel bearings, brake calipers, rotors, and pads. When doing so I broke one of the sensors, but replaced it. When bedding the pads ABS felt odd, but seemed to eventually go back to normal, but then I developed almost a bad wheel bearing sound except it was constant and didn't change tone when turning. I pulled the rear hubs over the winter and the bearings are perfect. The car has been in storage all winter and I just got it out. The wheel bearing sound seems much less, but my ABS light comes on over 100mph. If I turn the car off and resume driving it goes away. Additionally I had what seemed to be a grinding at low speeds this a.m. The issues I am having is exactly like this thread and I think it is all related to the ABS:

https://www.s2ki.com/s2000/topic/100...tem-issue-ap1/

When the light isn't on ABS functions fine, I pulled the code and it came back as a combo of 3 sensors and some fault relay.

 

Problem solved, my left rear sensor was not seated all of the way. Not sure what it was doing at low speed though, maybe activating the ABS? Anyway all good an no tickets doing 110 on public roads!