Hi Guys,
You do not have to buy the akra from Aprilia to get your bike ECU unlocked. I have done many of these also Tuono V4`s. The navigator is capable of installing the RACE map onto your ECU it depends what year bike you have as the navigator will have the 2012 map. Although that map is better than the standard map anyway. I have a navigator & may be able to sort this for you.