It was promptly delivered on time. It was easy to down load and install. It made me aware of how poor a driver I was and reminded me of ways to increase performance of my vehicle. My ego was hurt at first but my skills improved and are getting better. The only thing that bothers me is the lack of detail on how the gadget works and warning signs that my vehicle is not performing at its peak. The manufacture should have a more detailed manual for all the functions and how to get the most out it.