I just got back from a great ride around the Big Bend area, but I on the way down there my back went into limp home mode, which I didn't know anything about. We happened upon a BMW mechanic who told us about it and suggested removing the ground wire from the battery to reset the motronic. This cleared the lime home mode and I assumed that it must have been caused by bad gas or something. We rode all weekend with no trouble, and then on the way home it did it again. I tried resetting it again and it would go back into limp home again within 5 minutes, so there is obviously something wrong. I know that the dealer could tell me in five minutes what the problem is, but that would mean I would have to take it to the dealer, pay the dealer, and miss all the fun of working on the bike yet another time. I thought that I would attempt to check all the suggestions you guys could come up with before I resort to the dealer. Just for info, I did the cannisterectomy a couple of weeks before this happened, so it might be related. I'm contemplating replacing the fuel filter, reinstalling the cannister, inspecting the fuel tank vent tube, and possibly testing the O2 sensor. Any suggestions would be appreciated.