I have a 16 PP GT and went 13.15 at 110 with Michelin MPSS 255/40ZR19's on all 4 corners. Hit the limiter right before the stripe. Corsa CAI, CJ Pony resonator delete h pipe, Roush quad axle back.
My 17 went 12.8 @ 112 with 2.05 60 ft when it was near stock. Tune only. I would expect 13.0-.2 @ 110 without the tune . It was a bama tune.... Shaved 2 seconds of that since.