That ECU problem seems very strange to me. Bring it up here for the shop day on Saturday and we can check it out maybe just loose connections and the dealership just replaced the whole thing without really diagnosing the issue. Anyway would like to meet you so come on up like Evan said and we can look into it. Maybe you don't have a bad ecu. I have not heard of anyone needing to replace 1 before they are pretty reliable and I have swapped out mine and some others regularly with no issues.
Robert