BD X Tuners for Ford 2003-2006 6.0L and 2007-2008 6.4L Power Stroke applications have selectable power gains of up to 130+ horsepower, plus features like a re-settable top speed limit, transmission shift "learning" capability, and much more.
 
Just plug the X Tuner into the OBD II port under the dash you can upload three different transmission programs and 10 engine economy/performance programs. Plus, you can download updated programs from the Internet via the unit's USB port connection! 

The X-Tuner utilizes BD’s unique pulse width timing and duration technology to achieve power gains—not increased fuel pressure. That means greater reliability without the worry of fuel system leaks.