Hey all I'm new to this page and have a question. I bought a 2010 3500 from a dealer. They said it has a single 40 horse H and S tune on it but the t I ner isnt in the pickup. The dpf and cat is all deleted and the egr is supposedly turned off but i haven't taken it out yet. I want to know what the best tuning is for my year, and whatever I get can I plug it straight in and have it override the H and S or do I have to have it flashed back to stock to do that?