Ford is trying to patent (track key related maybe?) it so AM have stopped development.
Source? Chris in a different thread. I believe the one about warranties, referring to a question from Cidasmuth
I had to look it up to find out what everyone was talking about. This would be a cool feature to have.
It sounds mean! It also straightens itself out when RPM's are increased. ‪2011 Mustang GT 5.0 cammed tune‬‏ - YouTube