i got a 2008 6.7 dually.... i found three chips, bully dog power pup, edge juice, and ts performance. not getting the bully dog cause i've had bad luck with them in the past. i'm not familliar with ts at all and don't know much about edge. all i want it for is milage, not hp or torque. the truck pulls good but don't get good milage..... i miss my 5.9!!!!!!! what do ya'll think? which one should i get. what are the ts chips like?? thanks for the imput....