i'd try swapping the map sensor with a known good one first- - mine incidentley had been stoof for 6 months with the 3 bar fitted when it ran rich at tickover but cleared as you reved it. a brand new one is now only 50 quid. the other one to watch is for an air leak from teh inlet manifold to the map sensor - as if it has one ( ie the pipe has come off or is loose) the map sensor will rear nearer atmospheric pressure rather than vacuum as at idle, this will result in the ecu thining the car is under load and will fuel accordingly = ie rich.