Roxor Tune Stage 1 to 2 Upgrade for 2.5LSend ECM to: Diesel Freak, LLC 1795 W M 32., Gaylord MI 49735 If you want to go from Stage 1 to Stage 2 tuning, you don't need to pay for a whole new tune. Maybe you bought your 2018 2022 Roxor used and it came with a stage 1, if it has our tuning, you only pay the difference. Simply ship us your ECM, we'll verify that we had originally done the tuning, we will do the upgrade and get your ECM shipped back ASAP. We do all of our tuning in house and