there is a checksum plugin for tunerpro that costs 10 euro. totally worth it... once you get the plugin downloaded then you have to order the license which is when you pay via paypal. make sure you read the readme doc.
http://www.mtx-electronics.com/automotive/page.php?25then when you save your file in tunerpro it will automatically update the checksums.
Thanks, I downloaded and sent them an email.
Appreciate the help!