Ever since I had my 1341 engine built around 6 years ago, the CO reading has always been very very low come MOT time (one last year was 0.2% (engine was cold) - I've seen 0% on a few occasions including the most recent test).
As I've recently moved to a different area, my MOT tester is a different person. He commented on how low my CO reading was and how it should be made a little richer. Nobody has ever mentioned this to me before. What do you guys reckon? It goes rich under boost, so I'm not worried about melting any pistons.
The idle is fairly lumpy and it isn't really that nice to drive under 2000rpm (I've always put this down to the cam, head work and manifold).
Would it be worth getting a remap, or a waste of money?
Thanks!