We all or at least most of us know that the TQi is required to have an I device to reach the full potential of the XO-1. I think that it is good that you need a I device to reach the full 100mph. It is good because it tells you all the temps, rpm, mph, and more. But many of you would prefer that you can just get a $30 screen instead of dropping $80 on a used iPod touch but then again if you can afford a $1000 RC car the you can surely drop $80 on a ipod touch. Also many of us already have ipod touches and iphones. So tell me would you rather maybe spend $30 on a screen just for the TQi or and I device that you can do what ever you want. For me I don't really care because I have a ipod touch 3 gen.