Rollin Smoke Diesel is proud to offer you EFI Live custom tuning from our good friend Kory Willis at Power Performance Enterprise (LA Tuning) for your Duramax. Please check out the link and let us know if you have any questions. Thanks!
http://www.rollinsmokediesel.com/cat-ppei.cfm
http://www.rollinsmokediesel.com/cat-ppei.cfm