When I went to test drive the TB, I plugged in and the salesman asked what I was doing. The CEL was illuminated, so I said, "Just monitoring functions and seeing what the CEL is for." There was about 6 or 7 codes, one being a MAF code and probably causing a few of the others. When I decided to buy it, the used car manager (jokingly) said, "We'll have to fix it for real." I said, "Yep!" He and my father-in-law have known each other for years. When I went to pick it up, they gave me a printout of the work they did to it to clear the CEL. One of the items was fuel level sensor replaced. On the way home, I filled up and noticed the gauge wasn't reading 100% full. I plugged the adapter in and started Torque and noticed the fuel was reading 94 or 96%. I think it was one of the Air/fuel multi-line displays. I'll have to play with that one a little more. Not sure if it is enough of a bother to go back and have them check it out, but it is rather annoying that the "fix" didn't fix it.