Hi Todd, Thanks for the Definition file. I am still unable to view my hex file. Maybe i am missing something or doing something wrong. I have copied the definition file into my Rommetadata\misubishi\Evo and airtrek directories. When i go to download the ECU file I select 2001-2005 3rd gen evo 7-8. It down loads the hex file but only list the rom info. Any further assistance would be greatly appceciated.