Hot Rod Scooters
From scoot.net
California based company producing the Vortex Carburetor, a modified carb for the Vespa.
The Vortex Carburetor may cause wheelies!!!
Uses three modifications:
Adding a Velocity stack [http://en.wikipedia.org/wiki/Velocity_stack Wiki Velocity Stack]
Adding a UNI type air filter element to the top of the carb box cover
Adding an adjustable jet
