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To follow up I have a 2014 ram 1500 and while this is the HD forum, my stubble upon to be here was a Google search for someone with “alfaOBD in Maryland” to assist or pay a small fee to recalibrate for the 32 gallon tank
The 1500 had the option of 32 gallon over the 26 gallon. But the dealership is way too much. So I just swapped a junk yard 32 gallon tank into the truck. For $75. It’s a direct fit