You just want a good torque tune? Nothing beats the Ford Procal and you can keep the warranty and the stock airbox.
Not as good an option if you have auto. For that I went with VMP. Who gives a damn? there is no way a tune from a reputable vendor is going to blow a motor.
Dyno tuning is waste of money on an NA car, unless you have very serious breathing mods like cams, CJ manifold, full exhaust, etc. The road is well-travelled here and good reputable vendor will get you 99% of a dyno tune's results for a fraction of the cost.
2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85
2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP