I think you will find its the speed passion speedo that is causing the problem.
One of the other Team Durango team drivers was having the same issue and he replaced the speedo and all was well. I would maybe turn off the overheat pretection and try that first. I run 6.5t orion in my 410v4 on 22-23 pinion and its coming off with very low temps on both the motor and speedo.
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