It depends on what version you had. Make sure you download the FULL version of the current tune. Then remember to update your firmware first, then install the tune. It will say, tune already installed, but you have to press install/update anyway to actually get it in the ECU.
A forum community dedicated to Dodge Cummins Diesel truck owners and enthusiasts. Come join the discussion about reviews, drivetrain swaps, turbos, modifications, classifieds, builds, troubleshooting, maintenance, and more!