Or will it cause noticeable damage or effect the performance as an iPod? I have the USA Spec iPod adapter that hooks into my Acura's factory radio through the XM connection. Up until I got my 6 I had just plugged in my 4S when I got in the car and it worked perfectly. I tried using an old 2nd Gen iPod touch I bought on eBay for $20 but it is a lot slower when you click to go to the next track, I'm not sure why. I have no choice but to stick w my 4S which works flawlessly, and when it's plugged in it's tucked away in a compartment out of site. The only problem is I don't want to carry 2 phones with me everywhere I go. I live in Ohio, will I cause damage or impact its performance by leaving it hooked up in my car as a permanent setup?