well maybe its not an m62 because theres no built in recirc valve, It came off a 99 mercedes c230, looks like a flattened A/C compressor clutch and all. I'm not using the clutch, going to make a solid pully for it. Im thinking i can use the screw to crack open the throttle plate if the port bypassing the plate isn't enough for engine to idle but this is my first supercharger installation so not very confident about my thinking.