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Returned to stock after sct problems
I have been running idp ex street for about a month. I returned my truck to stock and took it for a drive. About 5 miles. I did the trans relearn. Truck drove fine. I went in to the store and let the truck sit about 30 mins. On the way home the tran acted like it was slipping. The rpms would shoot way up when shifting from 2-3 3-4. What could make it do this? I checked for codes and got ones for the egr and one for the fan. My egr is deleted. I put the truck back to ex street and it shifts fine. Do I need to unhook the batteries when I return it to stock or is there some thing else wrong?
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