I have 2011 ram 6.7. I recently installed a tbe exhaust on and tried to install new mini Maxx. During install it froze up on 49% on the writing engine screen . I left it for over an hour and turned off truck and unplugged unit and tried to install again and now it freezes on preparing to intall do not unplug screen. All dash lights are lit up check engine, trailer brakes, 4x4 etc and now truck won't start. Truck has been like this for a week. I now have have a new tuner after returning the other but now am stuck as to what my next move should be. I think the PCM or ECM may be out. Please help. Thanks in advance.

 

Have you talked to the people at mini Max,
They should be able to help you.