Its not chirping its the bike say give me some Air. To experience it with a car you need to ride under the hood
I would leave it alone especially if your going to perform the maintenance on her. I am not sure about the Touring but on the regular Rockets it is easy to pull the air ducting out when doing maintenance you just remove the whole fuel tank so you can get at the the ducting so you can remove it just to change or check your plugs. Or wait until you try or pay a mechanic to balance the throttle bodies. All this is just minutes with the filter mods to get rid of the plumbing. Anyway or either way I hope your brother enjoy's the ride.
Amen. It took me a buttload of time to extract all that plastic crap, and I don't even want to think about putting it back. Plus, you free up tons of space under the tank with it gone.
Only at lower speed and when under excelleration I hear chirping as when at higher speed the air noise drows out that and most other noises. It doesn't bother me in the slightest, in fact I like the sound of power been made.
I run individual K&N's which also chirp. I lined the inside of my claw with some adhesive backed sound deadening material. Knocked the noise down about 75%