Dont know if this work with old version mac/ezee,read somewhere there was an odd timing or something with the hall sensors on the older ones.But it works exellent with my new Mac 10 cst motor.Just match the wires hall wires and motor sensors color for color.It is VERY quiet .And you can use modern lcd displays with it.Not only a 3 speed switch and a throttle like before.That was the big reason I wouldnt use a Mac before
https://bmsbattery.com/ebike-kit/721-s12sn-1000w-40a-torque-simulation-sine-wave-controller-ebike-kit.html
https://bmsbattery.com/ebike-kit/721-s12sn-1000w-40a-torque-simulation-sine-wave-controller-ebike-kit.html