My baby just failed its first MOT on emission levels (CO 10 times max!!!).
Has anybody got an Emerald map that has passed the MOT test, they could let me have a copy of? Thought it might be a good starting point before I start buggering about with my map.
That was with the cat fitted ???!??
Yes, CAT is fitted. Seemed the right thing to do 
On low idle (1200rpm) CO was fine (very low) but lambda was high.
On high idle (2900rpm) lambda was okay but CO went through the roof.