Discuss anything tuning related.
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I am having a problem getting files to download to my mefi 3 ecm after using tuner pro. When i go to upload the files to the mefi 3 it gets to 96% and then says upload error please check your connections to the mefi and make sure it is on. I have checked and everything is functioning as it should, checked the bus monitor in the mefiburn program and data appears to be flowing fine. I am able to upload from the ecm but can not download the new tune to it. Has anyone else had this problem? Tried resetting the ecm etc.