Have a 2007 dodge 3500, 5.9 cummins, auto, 4x4, 3.73 gears. am wondering the best programmer? exhaust? air intake? for this engine. just concerned about increasing mpg's and maybe more power. have seen the new pmt from bullydog. any thoughts? also have a 2008 ford f 450, 6.4L, auto, 4x4, 4.88 gears. any thoughts on increased mpg for this truck? use both trucks for towing about 7500 miles a month and about the same miles empty. thanks. burnout
