This tuning license is required for each Yamaha watercraft that you are programming with the Riva Racing Map Tuner X handheld programmer (sold separately or as a bundle). With this license, you will access to all of Riva’s world famous tuning library and full technical support. You can change the tune on your watercraft to one of theirs and even switch it back to stock as many times as you like. The licenses are specific to the watercraft VIN and cannot be used on any other watercraft after activation. These licenses are emailed directly to the purchaser and are non-refundable after activation.