I came from a GMC Typoon and used Datamaster for all datalogging and Tunerpro for editing. You get 20 free uses of the software before you have to buy it
http://www.ttspowersystems.com/DataMaster.html
I found it easier as well as most to do it this way.
Another site that has some info for vettes, but mostly for SY/TY:
http://www.code59.org/index.php