So I'm looking into a Diablosport Predator Mustang Tuner from americanmuscle.com- just looking for some opinions. I haven't done any mods, other than cosmetic and exhaust, to my '03 GT and figured it's about time to do something performance related. Anybody have any thoughts? Thanks.
Your best idea would be to find out what your local tuner uses and get that tuner. If you don't have a tuner near you than do what i did and get the Sniper Special Forces tuning software.