I have a 2000 Grand prix GTP. So my first problem was that I couldnt write the file i had on my car because of an invalid os/vin error. I email hpsupport and said that the file cant be fixed because it was a previously written file from powertuner i think. I got a stock .bin file from someone and I tried to write it but it failed and said a os/vcm error I think.. Think it was the first step. If I get a correct .hpt file will I be able to write to my car then. Also is there a way Ill be able to switch all data from my old file to a stock file using compare in like one easy step?