Yes, you have an 821 hyper. Those were plagued with a costly ecu and display frying due to sudden excess voltage caused by noisy coils. There ferrite filters prevent that voltage spike. The world chose to go to a more quiet coils taken from an Aprilia but Ducatis fix was to add one of those filters behind the dash. For me,I got the one behind the dash but I also use the Aprilia coils for added security. None of this will horsepower gains or losses, it is just for stray voltage spikes.