MOPED ARMY

Hello all,

Can anybody please explain what theses variable air intake chambers do....

such as <url>http://www.adrenalin-pedstop.com/p/SCOOTER--MOPED-NEW-DOPPLER-VAR-1689.aspx</url>;

and will they be any good on an BSA Ariel 3 (running encarwi carb).

(would look great on the carrier on the back of my trike)

<url>http://bsa-ariel-3.blogspot.com/</url>;