I am at silver lake sand dune this weekend and I was dragging in the dunes (only about 6 passes), and climb a few hills, when i was leaving the dunes today I had no three gear when i was going back to the house we rented. I have a dp tuner which was on the 100 setting when in the dunes with a 4 inch exhaust. When I got back to the house, I disconnected the batteries and took the dp tuner off and let it sit for about 2 hours. Hooked the batteries back up and the truck shifted fine in to third. I was wonder what cause this to happen and if I should put the tune back on? The tranny on got up to 180-190 while dragging and 210 while going up the hills. I stop once it hit 210. Oh yeah I bet a newer cumming with stacks, I dont know what year it was or what chip. it was sweet.

Josh

 

Anybody got some help?