got problem with old mondy
she failed on the mot with to high a co reading the limit is 0.3 and she is up around 0.4-0.6
the car is running induction kit, 4.1 manifold,highflow cat,cams,pulleys
the car has had lambda sensor replaced when the system was fitted sensor is about 1year old as the old one failed the car has had maf unit, has had a new ect sensor last weekend with spark plugs etc all of these mods was on the last mot and passed first time last year
any ideas?