Don demonstrate how to install a Joker Machine air cleaner on a 2013 Harley Davidson Sportster Forty-Eight. Afterwards, he use a Dynojet Power Vision tuner to update the electronic control unit. The video is in four parts: what’s in the box, removing the stock air cleaner, installing the new one, and flashing a new tune. At the end, he start the bike. In a later video, he will install new pipes.