You never posted your replacement Controller Model number in the previous thread, so all of the information being posted here may not apply to the Controller your have.
There is not a single OEM controller that will be able to maintain 14mph with 2 different magnets (4-pole and 8-pole), so either all of your magnets are 8-poles, or you have a unique controller.
This is one method to verify the number of pulses being generated by your speed sensor:
http://www.buggiesgonewild.com/elect...ml#post1244694