Got the HPtuner, and the first thing I did was a case learn. Man, that took a bit of time, I guess I'm too impatient to thoroughly read directions and just jumped into it. If you haven't seen the HP software, there's a begin button, then it tells you to increase RPM's. I tried it about a dozen times, it would either almost immediately tell me the RPM's were too high, or wait till it hit the rev limiter. I finally figured out to quickly let off the throttle once it hit the limiter. Then it doesn't say anything...I thought I'd get "finished", "complete" or "You finally got it!". Nothing. I still haven't driven it for a scan, but since my cruise knock happens only at 55-60 MPH, I'll have to go for a drive. More to follow.