Also, yet another way for those running a very stock-appearing hybrid to REMAIN stock appearing, but WITH gains.
Of course, it does nothing for the Ford 'counter' (as well as the draconian Cali OBD 2 plug in scans?? 
![Dunno    [dunno] [dunno]](/images/smilies/icon_smile_dunno.gif)
)  in the the ECM which WILL detect the requisite tune for that said hybrid.