Hi All, I have a friend that's got a 85GN(Hot Air), and he wants a Scan master. The car seem to be upgraded a little by the first owner, but I'm not familiar with the 85GNs, I have a 87GN. So tell me if a Scan Master will work in his car, and if not what can i do to make it work. Also if the PCM need to be upgraded let me know what to look for to be sure there isn't one in there already.