DD13 Tune

[BND]

First post but have read and learned much here thanks for all the great info. So I have a Cascadia with a DD13 2010 model. Was wondering if anyone here can help me figure out how bad the demandate on this truck is the original guy who did it is of no help. Also originally with this truck was having problems with emmisions and thats why demandated and now see how this was a possible major mistake. After that still was having issues and brought to a shop they did all injector cups and injectors and a turbo and still seems like running bad. Afraid if keep using I may destroy something but think it could be a bad tune and not fixing the original problem at first. I know this is more a cummins place and yes have 2 isx15 but thought id ask on the dd13 for now. FYI truck has around 540k. Thanks