Posted By: 4spd69gtx
Do tuners really work? 06 CTD - 08/02/15 03:52 AM
Just picked up an 06 3500 4x4 crew cab 8 ft bed w/cap. Anything out there that will help with mileage? Trans already rebuilt. 233,500 miles. I pull a trailer 8-9 months out of the year on a daily basis