I have searched and found some people say it works others say it crap.
Just thought I'd ask everyone about new thoughts if this is a reasonably reliable tire size speedometer correction. My Smarty does it now, but I may want to sell it when the Adrenaline gets all the bugs worked out, plus Smarty doesn't recalibrate when I'm at stock settings.

And no, I do not want to have the dealer do it every time I change something.

 

The Adrenaline will correct the speedo too.

 

As far as I know it does not actually correct the speedometer in the dash. It displays the true speed on its monitor. I would have to watch the Pulse and I don't want to do that.

Someone correct me if I'm wrong. I hope I am.