Hi. New to Caterham ownership. Have a 2002 car with Zetec 2 litre engine running on carbs. Under the hood I have a blue electronic box with "Blackburn Automotive Ltd" on it. Two plugs. Connected to a water temperature sensor, power, earth, and two what look like solenoids mounted just to the rear of the carbs. These have plastic pipes to the bottom of each carb. Not seen anything this on my previous cars. Anybody enlighten me on what system this is?