I am so disgusted with BULLYDOG that this is my first and LAST purchase I'll ever make of any of their products. I followed their instructions verbatim and the file was not available so I could not tune my car. Then you try to contact "tech" support and the ONLY answer they have is "The update will be there Wednesday." Guess what, it wasn't there THIS Wednesday. I called AGAIN, and all I get is excuses. Also, every website or help issue on their server comes up with "Error 404 URL not found"...So, I paid the equivalent of a car payment and have had it 9 days without being able to use it. And now I have to wait 5 more days. Their hold music talks about how great their products and service are but it's truly a joke! It is essentially BUYER BEWARE!!!!