Hi I'm new to this form. Purchased an ST3 4 months ago and love it. Due to my dealer being so far away I need to do some of my own wrenching, found a unique Diagnostic tool at a company out of Mich. All cables and software included, this system works with laptops or PDAs and is fairly user friendly. I also believe but am not sure that it will work with other models with the same ECU type. $198.00 USD and they have a very eager and helpful support staff. Hope this helps someone in need. Keep the rubber side down.