The aux is off as stated and it takes some key presses to turn it on. You can also use the usb port on the front if its a smartphone. Will charge and play music. The ac power port is optional, some have it and others don't. I do and I'll use it to charge things instead of the cig lighter. The exhaust is just a chrome tip held on by a clamp/screw can't remember which, someone probably removed yours. I've never seen a xsp ur. Don't know how that would work lol. The xsp is usually a southeast Toyota thing I believe. They had the xsp badge, the polished 18" wheels, and a few other port added options. Nothing special.