I have the commander chip in my grand national. I can set my peramaters but when I disconnect the battery some go back to the default settings and some go to settings I never programmed. I like this chip but it does me no good like this. Whoever I talked to on the phone said this is the nature of the beast. I also can't get on their website due to the fact I haven't received an email yet confirming I can post on their website. Any advise