trying to think mate, its got to be at teh throttle bodymate as theres no air flow sensors in the air box or entrance to the air box, so its got to be there or there abouts
 
Could it be causing the car to sort of die for a second when driving along then all be fine again? Its happend a few times now, the car feels like its stalled then its literally fine again.

Some one has said it could be the maf sensor?