New to DiabloSport Family with some concerns

[Spain_GXP]

I just wanted to tune my car.

Spain is sad..



-Spain

[jmass1198]

I as well have have a small concern regarding which tune is best for my 2007 Mustang GT. The car has a cool air intake, new headers, larger throttle body, short throw shifter, and cat back exhaust. I have the diablo predator 1 for a tuner and the car was previously tuned using it by the original owner. We did some work to the car involving rebooting the computer so when i went to retune i was stuck with the vast amount of options. Should I stick with the Performance 93 Octane or something else?