I have a few questions about the LMM egr delete kits out there. Its a bone stock cc/sb. The truck sits at idle A LOT which seems to clog the dpf or something until I run the interstate for a while. Sometimes I get the clean exhaust filter message. A lot of the time it will sound like the motor is knocking until I run the interstate for a while, even without the message. EGR code is always on, so I wonder if its sticking and causing these issues. Now on to the kits out there. Its a work truck, not racing anyone. don't need the stage 5 tune, just want a little more power and better fuel economy. It seems like Sinister is the most available egr kit, but I'm not sure which one to do. The one without the intake tube says you don't need anything else to do the job, but everything I see says you need the LB7 up pipe. Looks like the kit with the intake tube, you do have to have the up pipe. How much difference is there in the performance of the block off and the full delete? I would also appreciate some input on the exhaust/dpf delete. Is Flo-Pro any good? Again I don't need racing exhaust but would like to get better mileage. I have a limited budget so links to good deals or recommended vendors would be appreciated. Ive seen a few tuners names on some threads, but not sure of their companies. Any help will be greatly appreciated.