Just spent a bit of time browsing the various focus forums and it would seem that the CAT/SPORT CAT/DE-CAT issue is pretty common.

There seem to be some other alternatives to the standard ford CAT which is around the £370 mark. Has anyone bought a CAT from 'cats2go'? If so did it fit to the car ok?

I still haven't heard back from online automotive about the dodgy fitting CAT that I bought from them. I don't think I'll bother de-catting the car as it seems too much hassle come MOT time and I don't think I'll re-fit the janspeed sports cat as the EML always comes on with it.

Back to the drawing board.