I found this in the FAQ. Following these instructions i fixed it:
I can’t find my tunes (or .ecu file) after running through the wizard.
Sometimes, the WAR Chip wizard trips up do to unique circumstances related to a specific laptop or desktop. If you open the WAR Chip program the very first time and have a blank interface, you will need to add your .ECU file manually as well as open the 4 tunes and write them. After the wizard has run, you will find those files located in this directory: C:/documentsandsettings/ “username” /wc