I have just removed my hypercharger from my 07 nightrain. Before I install my new air cleaner I can see that the airline from the engine that controlled the butterflies on the hypercharger is just a straight fitting. 

Google up Harley Hypercharger and click on the Kuryakyn site and you can find the original installation instructions with pics of where the original hose came from, you might need to buy a new hose as some installs ask for the hose to be cut down to fit the hypercharger.