WHat tuners do u guys use?... which can u get the most power out of?.. also do u have to pay for every seperate tune with all of them?

 

The most popular ones around for Mustangs are the SCT X-CAL or the Diablosport Predator.

Most people will say the SCT is better, but I wouldn't know since I havn't used both. If you got $$$---go with the SCT - LiveWire. The tuner comes with set tunes, or customizable tunes, so you don't need to pay for anything but the tuner itself, then use it how you want.

 

SCT!