Well, it was fine down there until Sunday, I filled up at 76, then it started pinging like a motherf@cker, right at 4k RPM. Scott and Tyson were with me, sao they heard it. However, it seemed like the computer eventually adjusted to it, because I could not get it to duplicate the sound on the way home. I think maybe I had a shitty tank of gas or something, but who knows. And of course, Scott loves to poke fun at my misfortune