MINI Cooper S R52 R53 Supercharger Pulley Kit Belt Plugs - KAVS 17% / NGK BCR8ES

You therefore do not suffer the effects of 'turbo-lag' (where there are not enough exhaust gases to compress the quantity of air required lower down in the rev range). The way the lobes spin is that two cogs interlink at one end outside of the main air-flow path, and connect to a pulley on the outside of the turbine housing.