Upgrade inboard PCM at dealership before use
got device, plugged it up with excitement only to find it wouldn't work. Called tech support and found out my truck needed updating before I could use. Finally installed but was hoping to correct speedometer due to tire size, still 2.5 mph off. Everything else works as it should now.
still working the kinks out of things
Love the product just wish I could actually get the preloaded tunes like it said it had on there....only problem is that my colorado is not yet supported. Hopefully, in the near future, things will get updated for this truck. But otherwise I have faith in the product. Keep up the good work.