I have a '05 3500 4x4 Dually that I just had tuned. I put a Volant cool air intake on, 5" exh, and a electronic SCT setup on the dash. When they went in and loaded the tune it ran fine until I hooked up to my enclosed trailer. It limped the trans in 5th which resulted in a P0700 and a P0735 code. We detuned it a little bit 3-4 times but now I am basically back to the stock settings just so that it will not limp the trans. We went in and set the limp settings from stock to 100 across the board but that didnt help. What can I do if anything to go back to the original tune. I was getting great fuel mileage with that tune but now I am back to basically stock fuel mileage. Any help would be greatly helped.