I have a buddy with an LMM that he has been using his Banks six gun on since he bought it, he has decided to do a DPF delete as well as block and shut off the EGR, I read his stock file and made the changes to shut off DPF and EGR, truck runs and drives fine no engine light but he says the turbo sounds different and his fuel mileage has gotten worse??? I made no changes to his file except the changes to the DPF and EGR related MIL's and parameters. Can it be done this way or just ditch the Banks and tune it? He wanted to keep his Banks because he uses it for gauges, it has a nice monitor.