just got back from my dealer where they did that computer recalibration deal. normally im there for an hour or two but today it was 4 hours. what actually did they do. im just crurious. i think they had to run the engine a lot since i was showing 25 mpg when i left. im not normally naive on this stuff but i am this time. as we say here in nashville ,hep me (help me ) :? :? :?