I just took my C230 year 2000 to a local foreign car shop and they told me the supercharger was bad ($2250 for part only quoted). They replaced the air flow meter which was bad to just get the car running but said they did not know how long the car would run. I called a parts company and they said it may be an EIS control unit. Does anyone have any knowledge about this? The car basically was bogging down when you step on the gas. I replaced the plugs and fuel filter but it did not help.