I have read the other message with the not recognizing the key on. I have no Electronic upgrades done to this car except;The only thing i have done is switched a 2007 single disk cd player for a 2006 6 disk cd player.

I recently purchased a U7145 for my 2007 Mustang GT. When i select the performance tune it goes all the way through the menu until you get to turn the key hot. At which time it times out and says did you turn the ignition on. I check with a diagnostic device and it reads fine. Is there something ...