Anyone running HP Tuners on their S550 yet or know anyone that is? And if so are there ANY issues like the SCT tuners are having like the hanging rpm's? I know there is HP Tuner software for the 11-14's but not sure about the S550's yet.
My guy does both SCT & HPTuners, so far he's preferred to SCT while sorting out the fun ford bs.
We tune all of our cars including our production vehicles we're building with HP tuners and we have had nothing but success with the software and hardware