Works motorsport airbox or Works airbox with the flap removed and a ITG filter. Amazing increase in induction, whine and popping which now sounds like a bang.
I've got the above with a miltek and the Mini sounds superb. On a rolling road it came out at 181bhp with 1613 ft lb torque. They reckoned the Cars where down by 4-5bhp due to not being able to get the supercharged cars cooled down.