i use just a simple plastic container, a 12Volt DC solenoid valve conected to ignition (+)
So it turns on and off when the bike is started or stopped.
For the dosing i use a simple air reduction valve (industrial pneumatic component) and clear air hose (6mm outer dia, 4 mm inner dia)

works well for me.

__________________
Saludos,
Joe
http://web538.ypsilon.ibone.ch/index...d=89&Itemid=42

neoprene fork protectors Acerbis / blue Puig wind shield / fork spacers 24mm / snorkel and resonater out / Acerbis hand protectors / 25 mm bar risers / 12 V outlet / "soft throttel mod" / engine protector home made / PC III USB / DNA ST2 / K&N ST 1 / BSM "Future extreme" exhaust / Wilbers "Adjustline" Shock / XTX links / luggage carrier home made / automatic chain oiler home made