Alright all, Just gone to pick Noggy up from the garage, and she's failed on the emissions. Apparently to CO reading was 1.32%. Doh! Matey has advised that I probably need a new catalytic converter and the lambda sensors too. 1. The car is running on a stage 1 map, and I have recently put a Badger 5 V3 kit on, would this have made the readings go off kilter? 2. If I do have to source a cat and sensors, does anyone know how many sensors there are? It's an S3 AMK code, 2001 reg. It looks like eurocarparts are doing a good deal this weekend so I may crack on with a purchase from them. Cheers guys!