is common for the PC3 to just loose its map, or for the map file in the PC3 to become corrupted after a year and half. or could it just be that the PC3 all of a sudden went bad do to hardcore riding ","
The actual tune file will not go bad or become corrupt...
The only way for that to happen is to actually pull the file and mess with it, then you could corrupt it or change a setting to cause it to function improperly. Of course that would require you to have a computer and actually download the file, change it or play with it and then install it on the quad.
If you was riding hard and the quad starting acting up, I would look more towards a mechanical problem. Possibly electrical wiring getting wet or knocked loose causing a bad connection.