I just got my FAST system not too long ago. i just installed it in my car but haven't gotten to the point of starting the car yet. I took the software and put it on my pc at school. I loaded the demo file as well as another file i got from a buddy. I started to change them to what i felt my car would need. When i went to save the changes, it said i couldn't b/c i was in demo mode. What exactly does that mean? Can you not save chagnes unless your online (hooked up to the ecu with the power on)? I used to edit my DFI files here at school and then put them on disk and take them back home to upload into my unvrsl folder. I wanna do this with the speedpro. How can i do it? It's just not letting me save changes. I'm on a dos version that harry from PTE sent me. Please help! Thanks fellas