What would be the best tuner for me to get for my 06 mustang gt automatic??????

 

Go with either an SCT X3 or the Diablosport. Also make sure you get it from a good source such as Bama or Brenspeed, but seeing your an auto I hear Bama has the best auto tunes. You could also consider getting the tuner/CAI combo deal which is one of the best bang for the buck things you can do

 

Find out which tuner your local speeds shop works with, then get which ever one they support. I originally had a Diablosport but had to switch to an SCT because Alternative Auto only works with SCT.

If you need a Diablosport Predator, you need a U7140 because; U7145 only works with 07-09. If you get an SCT you can either can an XCal2, XCal3, or Livewire.