The hardest part of that process is taking the dash instr panel out to get to the skreem. Do you have anyone in the area that has a xfire you could borrow the bcu, key and skreem from ......I assume this is a N/A xfire? The bcu and skreem hold the VIN so must match with the key that is programmed to the skreem....... the original key would have the correct cut to actuate the ign. That would bypass the old security in your car and tell you what you need to know.