I had the rig towed to Cummins in Orlando. They called me the next day and said the new part I installed was no good and they would replace it and no charge. Wow, that would be nice. A few days later they called back said the new part did not fix the running problem, and they still did not know way it ran so bad. I think they started to just plug in new parts until it ran ok. Any way a few days later they called and said the computer was the problem and it was putting out bad codes and leading us to trying to fix the wrong problem. New computer and code for it plus labor $1888.00. Seems the computer comes with no code info in it. I must say I have little faith it this engine, every time I turn the key I hold my breath. END