Hi.. just changed my throttle body because the gears had stripped. In doing so I removed the sensor that obscures the front bolt on the throttle body, and managed to brake the plastic tube off the bottom.(the tube is still in the housing above the throttle body). I have re-assembled the unit with a smear of sealant as a tempory measure. The problem is that I dont know what this sensor is to order a new one.
Does anyone know what this sensor is, and what its job is. The car seems to be running fine. The sensor sits just above the throttle body, to the right of the dip stick hole, and has a 3 wire connector on it.

I believe you are referring to the boost pressure sensor.

Thanks Alex.. is that part no. LR001324 ?

Yes.