I am ready to add some more help to my engine, and would like some input on which tuner/programmer is best. I am looking for towing help as well as some better gas mileage when empty. I pull a 42 foot 8 horse trailer, I already have added an AFE stage 2 air filter and scrapped the factory exhaust for 4. 5 inch Magnaflow dual exhaust with no dpf. I have a 07. 5 3500 quad cab 5. 9L so i am not bound by the new blue tech engine... ...